D3.1.9-12: Gathering Evidence from a Wide Range of Views
In plain English: D3.1.9-12 is the C3 Framework inquiry indicator for grades 9-12 that asks students to gather relevant information from multiple sources representing a wide range of views, using each source's origin, authority, structure, context and corroborative value to guide which sources they select and how far they rely on each.
Gather relevant information from multiple sources representing a wide range of views while using the origin, authority, structure, context, and corroborative value of the sources to guide the selection.
C3 Framework for Social Studies (NCSS) · Dimension 3: Evaluating Sources and Using Evidence · Gathering and Evaluating Sources · Official standard
Students gather relevant information from sources that represent a wide range of views, and they use five lenses (origin, authority, structure, context and corroborative value) to decide which sources to select and how far to rely on each. The vehicle is a question historians still argue about: why Custer's command was defeated at the Little Bighorn in 1876.
The sources range from the 1876 reports of two Army officers and a critic's charge, through a Sioux participant's account recorded in 1905 and a Sioux historian's judgment of 1918, to the National Park Service's current account. Students find that some facts are well corroborated across views, that some explanations come from interested parties, and that the surviving record is thin for some peoples.
Learning Objectives
By the end of this lesson, students will be able to:
Gather information relevant to a compelling question from sources representing a wide range of positions
Use origin, authority, structure and context to judge how far to rely on each source
Test claims for corroborative value, including whether agreeing sources are independent
Separate well-corroborated facts from contested interpretations in a written answer
Prior Knowledge Required
Students should already be comfortable with:
Gathering information from multiple sources using origin, authority, structure, context and corroboration D3.1.6-8
Determining helpful sources with attention to points of view, availability and uses D1.5.9-12
Evaluating authors' differing points of view on the same historical event RH.11-12.6
"After a close game, the losing coach, the winning coach, a sportswriter and a fan all explain why one team lost. Whose explanation would you trust on which points, and why would you want all four?"
Collect answers. Students usually notice that each speaker knows different things and has different reasons to tell the story a certain way. Introduce the indicator: when gathering information, historians deliberately look for a wide range of views, then use five lenses (origin, authority, structure, context and corroborative value) to decide how far to rely on each.
Direct Instruction25-30 minutes
Part 1: The question. On June 25-26, 1876, warriors of the Lakota, Northern Cheyenne and Arapaho defeated the 7th Cavalry at the Little Bighorn River in Montana, and Custer's five companies were killed (NPS Battle Story page; Source 6, paragraph 4). The compelling question is "Why was Custer's command defeated at the Little Bighorn?" The battle is a vehicle for the skill: students will gather relevant information from sources made by Army officers, a critic, a Sioux participant, a Sioux historian and a modern federal agency.
The five lenses, in brief:origin (who made the source, when, and how the maker knew), authority (what qualifies the maker to judge this point), structure (what kind of document it is and how its form shapes what it says, including reprints and selections), context (the circumstances and purposes behind it) and corroborative value (how far independent sources confirm it). A wide range of views means sources whose makers stood in different positions, not just more sources from the same side.
Source Information: who made each source, when, and from what position (from the sources themselves and the NPS page)
Source
Maker and position
When made
How the maker knew
1: Reno's report
Major Marcus A. Reno, who commanded three companies, "140 men" (Source 6, paragraph 2), and then the regiment after Custer's death (Source 1, paragraph 1)
Dated July 5, 1876; printed by Victor in 1881 with "a few unimportant paragraphs" omitted
Fought in the valley and on the bluffs; followed Custer's trail afterward
2: Rosser's charge and Reno's reply
General T. L. Rosser, called one of "Gen. Custer's personal friends"; Reno answering him
Letters of 1876, published in the Army and Navy Journal, printed by Victor in 1881
Rosser's basis is not stated in the passage; Reno fought in the battle
3: Sheridan's report
Lieutenant General Philip H. Sheridan, commander of the Military Division of the Missouri (NPS Battle Story page)
His report for 1876, printed by Victor in 1881
"From all the information that has reached me" (Source 3, paragraph 2)
4: Rain-in-the-Face
A "noted Sioux warrior" (Eastman's words, Source 4, paragraph 1) who fought in the battle, interviewed by Eastman
Told about two months before his death on September 14, 1905; printed in 1918
Fought in the battle; some details, he says, are what is "generally said"
5: Eastman
Charles A. Eastman (Ohiyesa), who writes of "the Sioux nation, to which I belong" and wants to present chiefs "in the light of the native character and ideals" (Indian Heroes, chapter 1)
1918
Not at the battle; writes as a historian of his people
6: National Park Service
The federal agency that manages the battlefield
Page last updated April 23, 2025
Draws on "Modern historians" and "Archeologial finds" (paragraphs 1 and 3)
Printer of 1-3: Victor
Frances Fuller Victor, author of a history of the Sioux War, who reprints and introduces the documents
1881
Collected and selected published documents
Part 2: Read the sources. Students read Sources 1-6 and keep an evidence log: each piece of relevant information, its source and paragraph, the maker's position, and one lens note. Terms: devolved (passed down), qui vive (on the alert), divide (high ground between two river valleys), lodges and tepees (the households of the camp), coulee (a deep ravine), Long-Haired Chief (Rain-in-the-Face's name for Custer).
1After the battle in which Lieut. Col. Custer lost his life, the command of the 7th Cavalry regiment devolved on Major Reno. The following is a copy of Reno's official report to Gen. Terry, excepting that a few unimportant paragraphs are omitted. It is dated July 5th, 1876.
[...]
2"After following over his trail, it is evident to me that Custer intended to support me by moving further down the stream, and attacking the village in flank; that he found the distance to the ford greater than he anticipated; that he did charge, but his march had taken so long, although his trail shows he moved rapidly, that they were ready for him; that Companies C and I, and perhaps part of Company E, crossed to the village or attempted it at the charge and were met by a staggering fire; and that they fell back to secure a position from which to defend themselves; but they were followed too closely by the Indians to permit him to form any kind of a line. I think had the regiment gone in as a body, and from the woods in which I fought advanced on the village, its destruction was certain; but he was fully confident they were running, or he would not have turned from me. I think (after the great number of Indians that were in the village) that the following reasons obtained for the misfortune: His rapid marching for two days and one night before the fight, attacking in the day time at 12 p.m. and when they were on the qui vive, instead of early in the morning; and lastly, his unfortunate division of the regiment into three commands.
Marcus A. Reno, in Frances Fuller Victor, A History of the Sioux War, Major Marcus A. Reno's official report, July 5, 1876, as printed by Frances Fuller Victor (Source 1) (1876; this edition 1881). Public domain (published 1881). Source text.
1Major Reno's conduct on the first day of the fighting on the Little Big Horn, has been severely criticised by several of Gen. Custer's personal friends; and one of them, Gen T. L. Rosser, in a letter addressed to Reno and published in the Army and Navy Journal, blames him for taking to the timber when his "loss was little or nothing." "You had," he says, "an open field for cavalry operations, and I believe that if you had remained in the saddle and charged boldly into the village, the shock upon the Indians would have been so great that they would have been compelled to withdraw their attacking force from Custer, who, when relieved, could have pushed his command through to open ground, where he could have manoeuvred his command, and thus greatly have increased his chances of success." It would seem as if this and similar criticisms were sufficiently answered by Reno's report; and by his reply to Rosser, which is given in part below:—
[...]
2"As I neared the village the Indians came out in great numbers, and I was soon convinced I had at least ten to one against me, and was forced on the defensive. This I accomplished by taking possession of a point of woods where I found shelter for my horses. I fought there dismounted, and made my way to within 200 yards of the village, and firmly believe that if, at that moment, the seven companies had been together the Indians could have been driven from their village. As we approached near their village they came out in overwhelming numbers, and soon the small command would have been surrounded on all sides, to prevent which I mounted and charged through them to a position I could hold with the few men I had.
3"You see by this I was the advance and the first to be engaged and draw fire, and was consequently the command to be supported, and not the one from which support could be expected. [...]
Frances Fuller Victor, quoting T. L. Rosser and Marcus A. Reno, A critic and Reno's reply, 1876, as printed by Victor (Source 2: General T. L. Rosser's charge and Reno's answer) (1876; this edition 1881). Public domain (published 1881). Source text.
1Lieut. Gen. Sheridan, in his report for 1876, expresses his views of the Custer disaster as follows:—
2"As much has been said in regard to the misfortune that occurred to General Custer and the portion of his regiment under his immediate command in this action, I wish to express the conviction I have arrived at concerning it. From all the information that has reached me, I am led to believe that the Indians were not aware of the proximity of Custer until he had arrived within about eight or nine miles of their village, and that then their scouts who carried the intelligence back to the valley were so closely followed up by Custer, that he arrived on the summit of the divide overlooking the upper portion of the village, almost as soon as the scouts reached it. As soon as the news was given, the Indians began to strike their lodges and get their women and children out of the way—a movement they always make under such circumstances. Custer, seeing this, believed the village would escape him if he awaited the arrival of the four companies of his regiment—still some miles in his rear. Only about 75 or 100 lodges or tepees could be seen from the summit or divide, and this, probably, deceived him as to the extent of the village. He therefore directed Major Reno, with three companies, to cross the river and charge the village, while he, with the remaining five companies, would gallop down the east bank of the river behind the bluff and cut off the retreat of the Indians. Reno crossed and attacked gallantly with his three companies—about 110 men—but the warriors, leaving the women to strike the lodges, fell on Reno's handful of men and drove them back to and over the river with severe loss.
[...]
3"Had the 7th Cavalry been kept together, it is my belief it would have been able to handle the Indians on the Little Big Horn, and under any circumstances it could have at least defended itself; but separated as it was into three distinct detachments, the Indians had largely the advantage in addition to their overwhelming numbers. If Custer had not come upon the village so suddenly, the warriors would have gone to meet him, in order to give time to the women and children to get out of the way, as they did with Crook only a few days before, and there would have been, as with Crook, what might be designated a rearguard fight—a fight to get their valuables out of the way, or in other words, to cover the escape of their women, children and lodges."
Philip H. Sheridan, in Frances Fuller Victor, A History of the Sioux War, Lieutenant General Philip H. Sheridan's report for 1876, as printed by Victor (Source 3) (1876; this edition 1881). Public domain (published 1881). Source text.
1The noted Sioux warrior, Rain-in-the-Face, whose name once carried terror to every part of the frontier, died at his home on the Standing Rock reserve in North Dakota on September 14, 1905. About two months before his death I went to see him for the last time, where he lay upon the bed of sickness from which he never rose again, and drew from him his life-history.
[...]
2“When we crossed from Tongue River to the Little Big Horn, on account of the scarcity of game, we did not anticipate any more trouble. Our runners had discovered that Crook had retraced his trail to Goose Creek, and we did not suppose that the white men would care to follow us farther into the rough country.
3“Suddenly the Long-Haired Chief appeared with his men! It was a surprise.”
[...]
4“When the troops were surrounded on two sides, with the river on the third, the order came to charge! There were many very young men, some of whom had only a war staff or a stone war club in hand, who plunged into the column, knocking the men over and stampeding their horses.
5“The soldiers had mounted and started back, but when the onset came they dismounted again and separated into several divisions, facing different ways. They fired as fast as they could load their guns, while we used chiefly arrows and war clubs. There seemed to be two distinct movements among the Indians. One body moved continually in a circle, while the other rode directly into and through the troops.
6“Presently some of the soldiers remounted and fled along the ridge toward Reno’s position; but they were followed by our warriors, like hundreds of blackbirds after a hawk. A larger body remained together at the upper end of a little ravine, and fought bravely until they were cut to pieces. I had always thought that white men were cowards, but I had a great respect for them after this day.
7“It is generally said that a young man with nothing but a war staff in his hand broke through the column and knocked down the leader very early in the fight. We supposed him to be the leader, because he stood up in full view, swinging his big knife [sword] over his head, and talking loud. Some one unknown afterwards shot the chief, and he was probably killed also; for if not, he would have told of the deed, and called others to witness it. So it is that no one knows who killed the Long-Haired Chief [General Custer].
Charles A. Eastman (Ohiyesa), recording Rain-in-the-Face, Rain-in-the-Face's account, as told to Charles A. Eastman in 1905 (Source 4) (1918). Public domain (published 1918). Source text.
1[...] It is well known to us that it is Crook rather than Reno who is to be blamed for cowardice in connection with Custer’s fate. The latter had no chance to do anything, he was lucky to save himself; but if Crook had kept on his way, as ordered, to meet Terry, with his one thousand regulars and two hundred Crow and Shoshone scouts, he would inevitably have intercepted Custer in his advance and saved the day for him, and war with the Sioux would have ended right there. Instead of this, he fell back upon Fort Meade, eating his horses on the way, in a country swarming with game, for fear of Crazy Horse and his braves!
[...]
2That leader had quickly saddled his favorite war pony and was starting with his young men for the south end of the camp, when a fresh alarm came from the opposite direction, and looking up, he saw Custer’s force upon the top of the bluff directly across the river. As quick as a flash, he took in the situation--the enemy had planned to attack the camp at both ends at once; and knowing that Custer could not ford the river at that point, he instantly led his men northward to the ford to cut him off. The Cheyennes followed closely. Custer must have seen that wonderful dash up the sage-bush plain, and one wonders whether he realized its meaning. In a very few minutes, this wild general of the plains had outwitted one of the most brilliant leaders of the Civil War and ended at once his military career and his life.
3In this dashing charge, Crazy Horse snatched his most famous victory out of what seemed frightful peril, for the Sioux could not know how many were behind Custer. He was caught in his own trap. To the soldiers it must have seemed as if the Indians rose up from the earth to overwhelm them. They closed in from three sides and fought until not a white man was left alive. Then they went down to Reno’s stand and found him so well intrenched in a deep gully that it was impossible to dislodge him. Gall and his men held him there until the approach of General Terry compelled the Sioux to break camp and scatter in different directions.
Charles A. Eastman (Ohiyesa), Charles A. Eastman on Crook, Crazy Horse and the battle (Source 5) (1918). Public domain (published 1918). Source text.
1Modern historians estimate the village numbered around 8,000, with a warrior force of 1,500-1,800 men. Custer's initial plan had been to conceal his regiment in the Wolf Mountains through June 25, which would allow his Crow and Arikara scouts time to locate the Indian village. Custer then planned to make a night march, and launch an attack at dawn on June 26; however, the scouts reported the regiment's presence had been detected by Lakota or Cheyenne warriors. Custer, judging the element of surprise to have been lost, feared the inhabitants would attack or scatter into the rugged landscape, causing the failure of the Army's campaign. Custer ordered an immediate advance to engage the village and its warrior force.
2At the Wolf Mountain location, Custer ordered a division of the regiment into four segments: the pack train with ammunition and supplies (125 men), three companies (125 men) commanded by Captain Frederick Benteen, three companies (140 men) commanded by Major Marcus Reno and five companies (210 men) commanded by Custer. Benteen was ordered to march southwest with the objective of locating any Indians, "pitch into anything" he found, and send word to Custer. Custer and Reno's advance placed them in proximity to the village, but still out of view. When it was reported that the village was scattering, Custer ordered Reno to lead his 140-man battalion, plus the Arikara scouts, and to "pitch into what was ahead" with the assurance that he would "be supported by the whole outfit".
[...]
3It is known that after ordering Reno to charge the village, Custer rode northward along the bluffs until he reached a broad drainage known as Medicine Tail Coulee, a natural route leading down to the river and the village. Archeologial finds indicate some skirmishing occurred at Medicine Tail ford. For reasons not fully understood, the troops fell back and assembled on Calhoun Hill. The warriors, after forcing Major Reno to retreat, now began to converge on Custer's maneuvering command as it forged north along what today is called Custer or Battle Ridge.
[...]
4About 40 men of the original 210 were cornered on the hill where the stone monument now stands. Hundreds of Lakota and Cheyenne warriors surrounded them. Toward the end of the fight, soldiers, some on foot, others on horseback, broke out in a desperate attempt to get away. All were pulled down and killed in a matter of minutes. The warriors quickly rushed to the top of the hill, dispatching the last of the wounded. Superior numbers and overwhelming firepower brought the Custer portion of the Battle of the Little Bighorn to a close.
National Park Service, Little Bighorn Battlefield National Monument, The Battle of the Little Bighorn: Battle Story (Source 6: the National Park Service today) (2025). US government work (17 U.S.C. 105). Source text.
Part 3: Model the selection. Work through the five examples. Each one applies a lens to a specific passage and ends with a selection decision: what to gather from the source, and how far to rely on it.
Origin: whose selection are we reading? (Source 1, paragraph 1)
Can Source 1 be quoted as "Reno's report" without qualification?
Result: Only with a note. Victor prints "a copy of Reno's official report to Gen. Terry, excepting that a few unimportant paragraphs are omitted" (Source 1, paragraph 1). The words are Reno's, but which paragraphs were "unimportant" was Victor's choice, not Reno's. Selection decision: use Source 1 for Reno's stated reasons, cite it as Reno's report as printed by Victor, and look for the full report in Army records before relying on what may be missing.
Authority: a commander who was not there (Source 3, paragraph 2)
How much weight should Sheridan's account of Custer's approach carry?
Result: Sheridan had the authority of the Army's regional commander, but he was not at the battle: his views come "From all the information that has reached me" (Source 3, paragraph 2), and he marks his own inferences, writing that the small number of visible lodges "probably, deceived him" (Custer). Selection decision: use Sheridan as the Army's official explanation, and check each detail against participants such as Reno and Rain-in-the-Face.
Context: when, and by whom, a report was written (Source 1, paragraphs 1-2)
What should a reader keep in mind about the reasons Reno gives for the defeat?
Result: Reno wrote on July 5, 1876, about ten days after the battle, as the officer to whom "the command of the 7th Cavalry regiment devolved" (Source 1, paragraph 1), and as an officer whose own actions would be judged. His three reasons, Custer's "rapid marching," the daytime attack and "his unfortunate division of the regiment into three commands" (paragraph 2), all point to decisions made by Custer. Selection decision: keep the report as a participant's explanation, but weigh it as the account of an interested party.
Corroborative value: agreement that may not be independent (Sources 1, 3 and 6)
The claim: Custer divided the regiment before the attack. How well is it corroborated, and how well is the claim that the division caused the defeat?
Result: The division itself is well corroborated: Reno names "three commands" (Source 1, paragraph 2), Sheridan says the regiment was "separated as it was into three distinct detachments" (Source 3, paragraph 3), and the NPS lists "four segments," counting the pack train (Source 6, paragraph 2). The interpretation that the division caused the defeat comes from Reno and Sheridan, and Sheridan built his view from "the information that has reached me," which likely included Reno's report. Selection decision: treat the division as an established fact and its effect as one argument, to be weighed against the other views on the page.
A wide range of views: who was surprised? (Sources 3, 4 and 6)
Was the village taken by surprise?
Result: The sources answer from different positions. Sheridan writes that "the Indians were not aware of the proximity of Custer" until he was within eight or nine miles (Source 3, paragraph 2). Rain-in-the-Face says, "Suddenly the Long-Haired Chief appeared with his men! It was a surprise" (Source 4, paragraph 3). The NPS reports that Custer's scouts told him "the regiment's presence had been detected," so Custer, "judging the element of surprise to have been lost," attacked at once (Source 6, paragraph 1). Selection decision: gather all three. Together they suggest that Custer believed he had been seen while many in the camp were still caught unprepared, a claim no single source makes.
Guided Practice15 minutes
Groups place every source on Diagram 1 and then answer: Which views are well represented, and which are thin? For example, there is one Sioux participant and no Northern Cheyenne or Arapaho voice on this page, while three sources come through Victor's 1881 book. Each group then names one more source it would look for to widen the range, and says which lens makes it valuable.
Teacher model: "Three of our sources pass through one 1881 book, chosen and trimmed by one editor. That is a structure and context problem, not just a numbers problem. I would look for the full Army reports and for accounts by Cheyenne participants."
Independent Practice15 minutes
Each student writes a one-paragraph answer to the compelling question, built from relevant information gathered from at least four sources that represent at least three different positions. After the paragraph, the student adds a short selection note: for each source used, one sentence naming the lens that justified using it and how far they relied on it.
Success criteria: the evidence is relevant to why the command was defeated; the sources span different positions; each source's weight is justified with a lens; the paragraph separates well-corroborated facts from contested interpretations.
Closure10 minutes
Exit ticket: "Which source on this page changed your answer the most, and which lens explains why it deserved that weight?"
Teacher note on the sources: Sources 1-3 are quoted exactly from the Wikisource transcription of Victor's 1881 book, Sources 4-5 from the Project Gutenberg text of Eastman's 1918 book, and Source 6 from the NPS page. Several passages in Sources 2 and 3 use slurs or derogatory terms for the Lakota and Cheyenne; those passages are omitted and the omissions are marked. Victor's chapter heading and some sources use "Little Big Horn," an older spelling of Little Bighorn. The figures in the sources, such as Reno's "ten to one" and the NPS estimate of "1,500-1,800" warriors, are the makers' claims or estimates. Analyze the battle through the documents; do not assign students roles as soldiers or warriors. Source 7 is invented for this page.
Quiz passage. Questions 11-13 of the quiz use Source 7, three invented evidence selections. Some are deliberately weak, for students to evaluate.
1Three students in an invented twelfth-grade class each chose three sources to answer "Why was Custer's command defeated at the Little Bighorn?" Some selections are stronger than others.
2Amir chose Sources 1, 2 and 3. He wrote: "These are the official Army records, so they are the most reliable. Three sources that mostly agree give strong corroboration."
3Beatriz chose Sources 3, 4 and 6. She wrote: "I wanted the Army commander, a Sioux warrior who fought in the battle, and the modern Park Service. They were made in 1876, 1905 and 2025 by people with very different positions, so where they agree, the agreement means something."
4Cole chose Sources 2, 5 and 6. He wrote: "I picked the sources that blame someone, because the question is about blame. Rosser blames Reno, Eastman blames Crook, and the Park Service blames Custer."
SVHS (invented scenario written for this page), Three Evidence Selections (Source 7: invented student work for the quiz). Original passage written for this page.
Differentiation Strategies
For Struggling Students
Give an evidence log with the five lenses as columns and the maker's position already filled in from the Source Information table
Assign Sources 1 and 4 first, one Army and one Sioux participant, then add the others in pairs
Provide the frame: "I rely on ___ for ___ because its ___ (lens) shows ___, but I am cautious about ___."
For Advanced Students
Compare Reno's "ten to one" (Source 2, paragraph 2) with the NPS estimate of warriors and Reno's "140 men" (Source 6, paragraphs 1-2): what do the numbers support, and what can they not show?
Plan a search for Northern Cheyenne and Arapaho accounts: what types of sources might exist, and who recorded them?
Explain how Eastman's stated purpose in writing could shape both what he includes and how readers should use it
Assessment Guidance
What to Look For
Strong work gathers evidence that bears on the cause of the defeat, draws it from sources made by people in different positions, and justifies each source's weight with a specific lens: Victor's selection (structure), Sheridan's distance from the field (authority), Reno's stake in the outcome (context), or independent agreement (corroboration). Watch for students who treat "official" as "reliable," who count three sources printed in one book as three independent views, or who discount Sioux testimony because it was recorded later without applying the same test to Army accounts.
02
Classroom Activities
3 Activities
1
Selection Committee
15-20 minGroups of 4
Each group is a committee choosing exactly four of Sources 1-6 for a museum panel titled "Why Custer's Command Was Defeated." The panel must present a wide range of views. For each source chosen, the group writes a label of two sentences: what relevant information it contributes, and which lens justifies including it. For each source left out, the group writes one sentence explaining why.
Committee Rules
At least three different positions must be represented (for example, Army participant, Army commander, Sioux participant, later historian, federal agency).
No more than two sources may come through the same printed book.
Every label must name a lens and quote the source.
Answer Key for the Teacher
Sources 1, 2 and 3 all come through Victor's 1881 book, so rule 2 allows at most two of them.
A strong panel often includes one Army participant (Source 1 or 2), Rain-in-the-Face (Source 4), Eastman (Source 5) and the NPS (Source 6); other panels can be defended.
Groups should be able to say what the panel still lacks, such as a Northern Cheyenne or Arapaho account.
Discussion
Ask: did the rule about one printed book change your choices? What does it reveal about how easy it is to mistake many sources for many views?
2
Claim Board
15 minPairs, then whole class
The class posts five claims on chart paper. Pairs record every source that supports, challenges or is silent on each claim, with paragraph numbers, and mark whether the supporting sources are independent of each other.
The Five Claims
Custer divided his regiment before the attack.
The village was taken by surprise.
The soldiers faced far larger numbers.
Another commander's retreat left Custer unsupported.
No one knows who killed Custer.
Answer Key for the Teacher
Claim 1: supported by Sources 1, 3 and 6 (see Example 4 on independence).
Claim 2: supported by Sources 3 and 4; complicated by Source 6 (see Example 5).
Claim 3: Reno writes of "at least ten to one" (Source 2, paragraph 2), Sheridan of "overwhelming numbers" (Source 3, paragraph 3), and the NPS of "Superior numbers" (Source 6, paragraph 4).
Claim 4: made by Eastman about Crook (Source 5, paragraph 1) and by Rosser about Reno (Source 2, paragraph 1); Reno rejects the charge against himself (paragraphs 2-3). The two charges blame different commanders.
Claim 5: Rain-in-the-Face (Source 4, paragraph 7); no other source here names a killer.
Variation for a Short Period
Assign claims 3 and 4 only, which show corroboration and disagreement most clearly.
3
The Missing Witness
10 minIndividuals
Each student writes a short request to an imaginary archivist asking for one source that would most widen the range of views on this page. The request names the kind of source, the position of its maker, and which lens would make it valuable.
Model Request
"Please find an account by a Northern Cheyenne participant, recorded at the time or later by an interviewer whose methods are described. It would widen the range of views, because no Cheyenne voice appears in Sources 1-6, and its origin as a participant would give it weight on the fight against Custer's companies."
Discussion
Ask: should an account recorded decades later be trusted less than a report written in 1876? Students should apply the same lenses to both rather than ranking them by date alone.
03
Diagrams & Visual Aids
1 diagrams
Diagram 1: The Range of Views and the Paths the Sources Took
Each dot is a source on this page, placed by the year it was made and by its maker's position. Dashed lines show that the 1876 documents by Reno, Sheridan and Rosser reach students through Victor's 1881 book, a single path. The diagram shows one Sioux participant and no Northern Cheyenne or Arapaho source, a gap to name when answering the question.
04
Homework Assignment
~30 min
D3.1.9-12 Homework: What Role Did Major Reno's Actions Play?
Directions: Use Sources 1-6 (printed in the Direct Instruction section). The focused question is "What role did Major Reno's actions play in the defeat of Custer's command?" Cite the source and paragraph for every piece of evidence. You will be scored on how you gather and weigh evidence, not on whether you blame or defend Reno.
Part 1: Gathering and Weighing (Problems 1-3)
Gather four pieces of information relevant to the focused question, each from a different source. For each, name the maker's position (for example, Army participant, critic, Sioux historian, federal agency).
Origin and context: what does Source 2 tell you about who Rosser was and where his charge was published? Explain one way this context should shape how much weight you give his charge, and one thing about its origin that the passage leaves unknown.
Authority: Eastman writes that Reno "had no chance to do anything, he was lucky to save himself" (Source 5, paragraph 1). What gives Eastman authority on this point, and what limits it? Name one other source on the page that bears on the same point.
Part 2: Structure, Corroboration and Selection (Problems 4-6)
Structure: Sources 1, 2 and 3 all reach us through one book. Explain why this matters for a question about Reno in particular, using Victor's own words in Source 2, paragraph 1.
Corroboration: Reno says he faced "at least ten to one" (Source 2, paragraph 2). Using the NPS figures for Reno's battalion and for the warrior force (Source 6, paragraphs 1-2), calculate the range of ratios they imply. Then explain what this comparison does and does not show about Reno's claim.
Selection: choose four sources representing at least three positions and write a paragraph (five to seven sentences) answering the focused question. End with a selection note naming the lens that justified each choice.
Rubric
Criterion
Full Credit (2 pts)
Partial Credit (1 pt)
No Credit (0 pts)
Relevant evidence
Four relevant, cited pieces of evidence from different positions
Evidence is cited but partly off the question, or from one side
Missing or uncited
Origin, authority, context
Applies each lens to a specific passage with a strength and a limit
Applies lenses in general terms only
Missing
Structure and corroboration
Explains the shared path through Victor and tests a claim against an independent source, with correct arithmetic
Notes one of the two, or the arithmetic has errors
Missing
Selection and answer
A reasoned answer from four sources across three positions, with a lens for each choice
Answer relies on fewer positions or gives no lens reasons
Missing
05
Quiz: 20 Questions
Interactive, with answers
Instructions
Questions 1-10 use Sources 1-6 and the Source Information table (in the Direct Instruction section). Questions 11-13 use Source 7, three invented evidence selections (in the Closure section). Questions 14-20 may use any source on the page. For each multiple-choice question, choose the best answer. For short-answer questions, write four to six sentences.
Multiple choice: pick an option to check it. Short answer: write your answer, then reveal the model answer.
0 of 20 answered · 0 correct
Question 1 of 20 · Multiple Choice
Rain-in-the-Face says, "It is generally said that a young man with nothing but a war staff in his hand broke through the column and knocked down the leader" (Source 4, paragraph 7). What does "generally said" tell you about the origin of this detail?
Answer: C
"Generally said" marks the detail as what people told afterward, not what he saw, even though he fought in the battle. A careful reader weighs this sentence differently from his eyewitness lines. A ignores his wording, B has no support, and D confuses the source.
Question 2 of 20 · Multiple Choice
Rain-in-the-Face told his story to Eastman in the summer of 1905. About how many years after the battle was that?
Answer: C
The battle was in June 1876 and the interview about two months before his death on September 14, 1905, so 1905 - 1876 = 29 years. A and B undercount the gap; D is the gap between 1876 and 1918, when Eastman's book was published.
Question 3 of 20 · Multiple Choice
Eastman writes, "It is well known to us that it is Crook rather than Reno who is to be blamed" (Source 5, paragraph 1). What is the most accurate judgment of this sentence as evidence?
Answer: D
"Well known to us" tells us the view is shared among Eastman's people, which makes it valuable for a wide range of views, but the passage does not show how it is known. A gives it too much authority; C rejects it outright; B is false, since Sheridan's passage does not blame Crook.
Question 4 of 20 · Multiple Choice
The NPS writes, "For reasons not fully understood, the troops fell back and assembled on Calhoun Hill" (Source 6, paragraph 3). What does this phrase tell a reader about the source?
Answer: B
By flagging what is "not fully understood," the page separates what the evidence shows from what it does not, which is a strength of its structure. A overgeneralizes from one sentence, C accuses without evidence, and D ignores its reliance on "Modern historians."
Question 5 of 20 · Multiple Choice
Sheridan says Reno attacked with "about 110 men" (Source 3, paragraph 2); the NPS says Reno led a "140-man battalion" (Source 6, paragraph 2). What is the best way to handle the difference?
Answer: B
When two sources disagree on a figure, a careful researcher reports the difference and looks for a source with a direct basis, such as the regiment's rolls. Averaging (A) invents a number neither source gives, dropping it (C) loses useful evidence, and rank alone (D) does not give Sheridan, who was not on the field, better knowledge of the count.
Question 6 of 20 · Multiple Choice
In Source 2, paragraph 1, Victor writes that Rosser's criticism and others like it "were sufficiently answered by Reno's report." Why does this matter for anyone gathering evidence from Sources 1-3?
Answer: A
The editor who chose and trimmed Sources 1-3 judged the dispute in Reno's favor, so her selection may favor him. B, C and D have no support; Victor herself says she left paragraphs out of Reno's report (Source 1, paragraph 1).
Question 7 of 20 · Multiple Choice
Which set of three sources represents the widest range of positions?
Answer: B
Sources 1, 4 and 6 join three different positions that reached us by three different paths: an Army participant (1876, printed by Victor), a Sioux participant (told to Eastman in 1905) and the modern federal agency (2025). A is three Army-side documents all printed by Victor. C and D each add one other position but keep two Army-side sources from the same book, and in D Reno is the author of both Source 1 and the reply in Source 2.
Question 8 of 20 · Multiple Choice
Which piece of information is least relevant to the question "Why was Custer's command defeated?"
Answer: A
Rain-in-the-Face's change of opinion about the soldiers is interesting evidence of his attitude, but it does not explain the outcome. B, C and D each name a possible cause: the warriors' attack on Reno's small force (Source 3), the division of the regiment (Source 1) and the warriors' strength (Source 6).
Question 9 of 20 · Multiple Choice
Rain-in-the-Face describes "two distinct movements among the Indians. One body moved continually in a circle, while the other rode directly into and through the troops" (Source 4, paragraph 5). Why is this especially valuable to gather?
Answer: A
No Army survivor saw the fight against Custer's companies from inside it, so a warrior's description of the tactics adds information the Army sources cannot give. B, C and D are false: he gives no numbers, he spoke in 1905, and Sheridan does not describe these movements.
Question 10 of 20 · Multiple Choice
Eastman says he wanted to present the chiefs "in the light of the native character and ideals" (Source Information table). How should this purpose shape the way you use Source 5?
Answer: D
A stated purpose does not make a source useless; it tells you what the writer emphasizes, here the skill of leaders like Crazy Horse. Use it for the Sioux interpretation it offers, and check factual details against other sources. A discards it, C ignores the purpose, and B throws away its most distinctive content.
Question 11 of 20 · Multiple Choice
Read Source 7. What is the main flaw in Amir's selection?
Answer: C
All three of Amir's sources are Army-side documents printed in Victor's 1881 book, so their agreement is not independent and they leave out the Sioux and modern views. A misses the problem, since three can be enough; B and D describe the opposite of his choice.
Question 12 of 20 · Multiple Choice
What is the main strength of Beatriz's selection in Source 7?
Answer: A
Beatriz combines an Army commander (1876), a Sioux participant (1905) and the federal agency (2025), so agreement among them carries more weight. B is false, since they differ on surprise; C and D misdescribe her choice.
Question 13 of 20 · Multiple Choice
Cole writes that "the Park Service blames Custer." Which reading of Source 6 is more accurate?
Answer: D
The NPS reports that Custer, "judging the element of surprise to have been lost," attacked at once, and it ends with "Superior numbers and overwhelming firepower" (paragraphs 1 and 4): it explains decisions and forces rather than assigning blame. A and B move other sources' charges onto the NPS, and C is false.
Question 14 of 20 · Multiple Choice
A later popular book names one warrior as the man who killed Custer but cites no participant. How should Source 4 affect a researcher's use of that book?
Answer: B
Rain-in-the-Face, a participant, says "no one knows who killed the Long-Haired Chief" (paragraph 7), so an uncited later claim needs other evidence before it can be gathered as fact. A reverses the effect, C ignores the value of a participant's testimony, and D misreads the passage.
Question 15 of 20 · Short Answer
Gather three pieces of information relevant to the compelling question, each from a source made by someone in a different position. Quote each, and name the position.
Model answer: Army participant: Reno blames "his unfortunate division of the regiment into three commands" (Source 1, paragraph 2). Sioux participant: "Suddenly the Long-Haired Chief appeared with his men! It was a surprise" (Source 4, paragraph 3). Federal agency: "Superior numbers and overwhelming firepower brought the Custer portion of the Battle of the Little Bighorn to a close" (Source 6, paragraph 4). Rubric: full credit for three relevant, accurately quoted pieces of evidence from three different positions; partial credit for two positions or loosely relevant evidence.
Question 16 of 20 · Short Answer
Rosser blames Reno; Eastman blames Crook. Using at least two lenses for each, explain how much support each charge has from the sources on this page.
Model answer: Rosser's charge comes from one of "Gen. Custer's personal friends" (Source 2, paragraph 1), whose basis for knowing is not stated (origin), and it was published while the dispute was raging (context); Reno, a participant, answers that he faced "at least ten to one" (paragraph 2), and the NPS says the warriors forced him "to retreat" (Source 6, paragraph 3). Eastman's charge reflects what is "well known to us" (Source 5, paragraph 1), a Sioux view (origin) from a writer who was not present (authority), and no other source on this page describes Crook's movements, so it has no corroboration here. Neither charge is settled by these sources. Rubric: full credit for two named lenses applied to each charge with evidence and a conclusion about support; partial credit for one charge or one lens each.
Question 17 of 20 · Short Answer
Amir (Source 7) claims his three sources give "strong corroboration." Explain why that claim is weak, and revise his selection.
Model answer: His sources are all Army-side documents printed in Victor's 1881 book, and Sheridan drew on "the information that has reached me" (Source 3, paragraph 2), so they are not independent and their agreement proves less than it seems. A revision keeps one of them, such as Reno's report (Source 1), and adds Rain-in-the-Face (Source 4) and the NPS (Source 6), so that agreement would come from different positions and different paths. Rubric: full credit for explaining the lack of independence and a revision that widens the range of positions; partial credit for one of the two.
Question 18 of 20 · Short Answer
Explain why Cole's selection rule, "I picked the sources that blame someone," weakens his evidence gathering, even though each of his sources is relevant.
Model answer: Choosing sources by whether they assign blame filters the evidence before he has gathered it, so he leaves out sources such as Rain-in-the-Face that describe what happened without blaming a commander. It also leads him to misread the NPS, which explains Custer's decision and the warriors' "Superior numbers and overwhelming firepower" (Source 6, paragraph 4) rather than blaming him. A sounder rule is to gather from a wide range of positions and then weigh each with the lenses. Rubric: full credit for identifying the selection bias, the misreading, and a better rule; partial credit for one of these.
Question 19 of 20 · Short Answer
Some readers treat the Army's official reports as the most reliable sources on this battle. Using the indicator's lenses, explain why the Sioux sources should also be gathered.
Model answer: Official status is not the same as authority on every point. No Army survivor saw the fight against Custer's companies from inside it, while Rain-in-the-Face fought there and describes the warriors' movements (Source 4, paragraph 5), which gives his account strong origin on that point. The Army reports also come from interested parties (context) and reach us through one editor's selection (structure). Gathering the Sioux sources widens the range of views and lets claims be tested for corroboration across sides. Rubric: full credit for at least two lenses applied with evidence; partial credit for a general argument for fairness without the lenses.
Question 20 of 20 · Short Answer
Choose four sources on this page that represent at least three different positions for a final answer to the compelling question. For each, write one sentence naming the lens that justifies it and one sentence on how far you will rely on it.
Model answer: Source 1: chosen for origin, as a participant's explanation; relied on with caution, since Reno had a stake in the verdict. Source 4: chosen for origin, as the view from inside the fight; relied on for what he saw, less for what was "generally said." Source 5: chosen to widen the range with a Sioux historian's judgment; relied on as interpretation, since its claim about Crook is not corroborated here. Source 6: chosen for authority, as a synthesis of modern research and archaeology; relied on for estimates, with attention to the points it marks as "not fully understood." Rubric: full credit for four sources across three positions, each with a named lens and a stated degree of reliance; partial credit for fewer positions or missing reliance statements.
0 of 20 answered · 0 correct
06
Frequently Asked Questions
10 Questions
What does D3.1.9-12 mean?
D3.1.9-12 asks high school students to gather relevant information from multiple sources that represent a wide range of views, and to use each source's origin, authority, structure, context and corroborative value to decide which sources to select and how far to rely on them.
How is D3.1.9-12 different from D3.1.6-8?
Both use the same five lenses. The grades 9-12 indicator adds that the sources should represent a wide range of views, so students deliberately seek makers in different positions instead of gathering many sources from one side.
What counts as a "wide range of views"?
Sources whose makers stood in different positions: participants and outsiders, people on different sides, people writing at different times, and people with different purposes. Three documents from one side, or printed in one book, are many sources but not many views.
Are official government or Army reports the most reliable sources?
Not automatically. An official report can carry authority on what its maker knew, but its maker may have an interest in the outcome and may not have seen every event. Apply the same lenses to official sources as to any other.
Should later accounts, such as interviews recorded decades afterward, be trusted less?
Not by date alone. A later account by a participant can have strong origin on what the person saw, while memory and the interviewer's role are limits. Weigh each account with the lenses rather than ranking by date.
What does corroborative value mean when sources agree?
It depends on whether the agreeing sources are independent. If one source drew on another, or both passed through the same editor, their agreement adds less than two separate witnesses would.
Why does this lesson use the Battle of the Little Bighorn?
The battle is a vehicle for the skill. Its sources range from Army officers and a critic in 1876, through a Sioux participant and a Sioux historian, to the National Park Service today, so students can see the five lenses and the value of a wide range of views in action.
How should teachers handle offensive language in historical sources?
Passages that use slurs or derogatory terms are omitted on this page and the omissions are marked. Students analyze the documents as evidence; they are not asked to take on the roles of soldiers or warriors.
How is D3.1.9-12 assessed on this page?
Students gather and cite evidence from sources in different positions, judge invented evidence selections, and write a short answer with a selection note for each source. The rubric scores the gathering and weighing, not a particular verdict on the battle.
What comes after D3.1.9-12?
The next indicators in Dimension 3 ask students to evaluate how experts value a source (D3.2.9-12) and to use evidence from multiple sources to detect inconsistencies and revise claims (D3.3.9-12).
07
Related Standards
5 standards
These standards connect to D3.1.9-12: prerequisites to review first, parallel standards at the same level, and next steps that build on it.
Before this lesson
D3.1.6-8Prerequisite
Gather information from multiple sources, guided by origin, authority and corroboration
Use evidence from multiple sources to detect inconsistencies and revise claims
Lesson coming soon
Standard text: National Council for the Social Studies (NCSS), The College, Career, and Civic Life (C3) Framework for Social Studies State Standards: Guidance for Enhancing the Rigor of K-12 Civics, Economics, Geography, and History (Silver Spring, MD: NCSS, 2013). NCSS was not involved in the production of this lesson and does not endorse it.