RH.6-8.2Common CoreELALiteracy in History/Social StudiesGrades 6-8
RH.6-8.2: Central Ideas and Accurate Summaries of Primary and Secondary Sources
In plain English: RH.6-8.2 is the Common Core literacy standard for history/social studies in grades 6-8 that asks students to determine the central ideas or information of a primary or secondary source and to write an accurate summary of it. The summary reports only what the source says, kept apart from what students already knew and from their own opinions.
Determine the central ideas or information of a primary or secondary source; provide an accurate summary of the source distinct from prior knowledge or opinions.
Common Core State Standards for English Language Arts & Literacy · Domain: Reading Standards for Literacy in History/Social Studies 6-12 · Cluster: Key Ideas and Details · Official standard
Students learn to find the central idea of a history source, the main point that the whole passage supports, and to write an accurate summary: a short account of the source in their own words that keeps its central idea and key details and leaves out what they already knew and what they think. They practice with two kinds of source. The primary sources are chapters by Marco Polo, the Venetian merchant who described the empire of the Great Kaan (Kublai Khan) after living there in the late 1200s: its paper money, its post stations and runners, and its help for people in years of dearth. The secondary sources are two passages from Hendrik Willem van Loon's The Story of Mankind (1921), a history written for young readers, on printing and on the dangers of sea voyages.
Each step has a test students can apply: Does every paragraph support this central idea? Is this detail key or minor? Did the source say this, or did I already know it? Is this the source's view or mine? Diagram 1 maps a central idea and its details, and Diagram 2 shows what belongs in a summary.
Learning Objectives
By the end of this lesson, students will be able to:
State the central idea of a primary or secondary source in one sentence and show which paragraphs support it
Tell key details from minor details in a history source
Write an accurate summary of a source that keeps its central idea, key details and numbers correct
Keep a summary distinct from prior knowledge and from their own opinions, and report an author's opinion as the author's
Prior Knowledge Required
Students should already be comfortable with:
Finding main ideas and the key details that support them, and summarizing a text RI.5.2
Telling a primary source from a secondary source and citing evidence from each RH.6-8.1
Basic background: in the 1200s the Mongol rulers of China controlled a huge empire, and European merchants such as the Polos traveled there over land
"A friend missed yesterday's assembly and asks what happened. You could say: 'The principal announced a new recycling program, explained where the bins will go, and said classes will compete to recycle the most.' Or you could say: 'The principal talked forever, it was so boring, and I already knew about recycling from my old school.' Which answer tells your friend what the assembly was about? What is wrong with the other one?"
Take a few answers. The first answer is a summary: it gives the main point and the key details. The second mixes in an opinion (a judgment such as "so boring") and prior knowledge (what the speaker knew before the assembly). Today students write summaries of history sources that a reader could trust.
Direct Instruction20 minutes
Part 1: The source. Marco Polo traveled from Venice to the court of the Great Kaan and lived in his empire for many years in the late 1200s; after he came home, his book was written down in about 1298. It is a primary source for what Polo saw and heard there. The English translation is by Henry Yule. Words in square brackets that are not [...] are Yule's: they mark lines found in only one early version of Polo's book. Gloss before reading: "mint" (the place where money is made), "bast" (the soft inner layer of bark), "vermilion" (a bright red color), "pass current" (be accepted as money) and "bezant" (a gold coin).
1The Emperor’s Mint then is in this same City of Cambaluc, and the way it is wrought is such that you might say he hath the Secret of Alchemy in perfection, and you would be right! For he makes his money after this fashion.
2He makes them take of the bark of a certain tree, in fact of the Mulberry Tree, the leaves of which are the food of the silkworms,—these trees being so numerous that whole districts are full of them. What they take is a certain fine white bast or skin which lies between the wood of the tree and the thick outer bark, and this they make into something resembling sheets of paper, but black. When these sheets have been prepared they are cut up into pieces of different sizes. [...] All these pieces of paper are [issued with as much solemnity and authority as if they were of pure gold or silver; and on every piece a variety of officials, whose duty it is, have to write their names, and to put their seals. And when all is prepared duly, the chief officer deputed by the Kaan smears the Seal entrusted to him with vermilion, and impresses it on the paper, so that the form of the Seal remains printed upon it in red; the Money is then authentic. Any one forging it would be punished with death.] And the Kaan causes every year to be made such a vast quantity of this money, which costs him nothing, that it must equal in amount all the treasure in the world.
3With these pieces of paper, made as I have described, he causes all payments on his own account to be made; and he makes them to pass current universally over all his kingdoms and provinces and territories, and whithersoever his power and sovereignty extends. And nobody, however important he may think himself, dares to refuse them on pain of death. And indeed everybody takes them readily, for wheresoever a person may go throughout the Great Kaan’s dominions he shall find these pieces of paper current, and shall be able to transact all sales and purchases of goods by means of them just as well as if they were coins of pure gold. And all the while they are so light that ten bezants’ worth does not weigh one golden bezant.
Marco Polo, translated by Henry Yule, The Book of Ser Marco Polo, Book II, chapter XXIV, "How the Great Kaan Causeth the Bark of Trees, Made into Something Like Paper, to Pass for Money over All His Country" (Source 1: the chapter after its first paragraph, to the end of the part on how the money is used; one cut marked [...]) (1871; this edition 1903). Public domain (published 1903). Source text.
Part 2: Four tests for a summary. Put these on the board and keep them up all period.
Four tests for an accurate summary
Test
Question to ask
If the answer is no
Central idea
Does every paragraph help to show this point?
Find a bigger point that covers them all
Key detail
Would the central idea be weaker without it?
Leave it out as a minor detail
Prior knowledge
Did the source say this?
Leave it out, even if it is true
Opinion
Is this the source's view, and do I say whose it is?
Leave out your own opinion; name the author's
Finding the central idea (Source 1)
Question: What is Source 1 mostly about? Test each paragraph: what does every paragraph help to show?
Result: Central idea: the Great Kaan makes money out of tree bark, and everyone in his lands must accept it. Paragraph 2 tells how the money is made, and paragraph 3 tells how it is used: the Kaan "makes them to pass current universally over all his kingdoms" (paragraph 3). A central idea is the main point that the whole passage supports, not one fact from it.
Key details and minor details (Source 1, paragraph 2)
Which of these belongs in a short summary: "the leaves of which are the food of the silkworms" or "Any one forging it would be punished with death"?
Result: The punishment for forging is a key detail: it explains why nobody dared to make fake notes, which supports the central idea. The silkworms are a minor detail: they tell us about mulberry trees, not about money. A summary keeps the key details and leaves out the minor ones.
Leaving out prior knowledge (Source 1, paragraph 1)
A student's summary says: "Cambaluc stood where Beijing is today." The sentence is true. Does it belong?
Result: No. Source 1 names "this same City of Cambaluc" (paragraph 1) but never says where it was or what it is called now. Prior knowledge is what a reader already knew before reading. It can help the reader understand, but a summary of the source must report only what the source says.
Leaving out opinions, and reporting the author's (Source 1, paragraphs 1-2)
Which sentence belongs in a summary: "The Kaan cheated his people," or "Polo says the Kaan's mint works so well that you might think he knew the secret of alchemy"?
Result: The second. "The Kaan cheated his people" is the student's own opinion, a judgment the source never makes. Polo's own view is part of the source, so a summary may report it if it says whose view it is: Polo writes that "you might say he hath the Secret of Alchemy in perfection" (paragraph 1). Alchemy was the old attempt to turn ordinary metals into gold.
A model summary of Source 1 (70 words)
Task: write a summary of Source 1 in 70 words or fewer, with the central idea and key details, and without prior knowledge or opinions.
Result: Marco Polo describes the paper money of the Great Kaan. Workers make black sheets from the inner bark of mulberry trees and cut them into notes of different sizes. Officials sign each note and an officer stamps it with a red seal, and forging one is punished by death. Everyone in the Kaan's lands must accept the notes, and Polo says they buy goods as well as gold coins do.
Show Diagram 1 and Diagram 2. Point out that the model summary uses the source's numbers and facts exactly and adds nothing, and that it names Polo whenever it reports his view.
Guided Practice15 minutes
Read Source 2 together. It is a secondary source: van Loon wrote it in 1921, more than 450 years after the events. Gloss "monopoly" (control by one group only), "privileged" (having special rights) and "humanism" (the Renaissance movement to study the writers of ancient Greece and Rome). Pairs write the central idea in one sentence, then list three key details with paragraph numbers.
1In Germany, in the city of Mainz, Johann zum Gansefleisch, commonly known as Johann Gutenberg, had just invented a new method of copying books. He had studied the old woodcuts and had perfected a system by which individual letters of soft lead could be placed in such a way that they formed words and whole pages. It is true, he soon lost all his money in a law-suit which had to do with the original invention of the press. He died in poverty, but the "expression" of his particular inventive genius lived after him.
2Soon Aldus in Venice and Etienne in Paris and Plantin in Antwerp and Froben in Basel were flooding the world with carefully edited editions of the classics printed in the Gothic letters of the Gutenberg Bible, or printed in the Italian type which we use in this book, or printed in Greek letters, or in Hebrew.
3Then the whole world became the eager audience of those who had something to say. The day when learning had been a monopoly of a privileged few came to an end. And the last excuse for ignorance was removed from this world, when Elzevier of Haarlem began to print his cheap and popular editions. Then Aristotle and Plato, Virgil and Horace and Pliny, all the goodly company of the ancient authors and philosophers and scientists, offered to become man's faithful friend in exchange for a few paltry pennies. Humanism had made all men free and equal before the printed word.
Hendrik Willem van Loon, The Story of Mankind, chapter "The Age of Expression" (Source 2: Gutenberg and the printers who followed him) (1921). Public domain (published 1921). Source text.
Teacher model for the pair work: Central idea: van Loon says that Gutenberg's way of printing with separate letters let printers make many cheap books, so learning no longer belonged to a few people. Key details: Gutenberg's letters "could be placed in such a way that they formed words and whole pages" (paragraph 1); printers in Venice, Paris, Antwerp and Basel soon produced "carefully edited editions of the classics" (paragraph 2); and "The day when learning had been a monopoly of a privileged few came to an end" (paragraph 3). Van Loon's last sentence, "Humanism had made all men free and equal before the printed word," is his judgment, so a summary reports it as his: "Van Loon argues that ..."
Practice summary for Activity 2. The summary below was written for this page. It contains four deliberate problems. Pairs will test it against Source 2.
In this passage from The Story of Mankind, van Loon explains how printing changed who could get books. Johann Gutenberg of Mainz, Germany, invented a way to print with separate metal letters that could be set into words and whole pages. He printed his famous Bible around 1455. Gutenberg was the most important inventor in history. Soon printers in Venice, Paris, Antwerp and Basel were printing carefully edited books in several kinds of letters. Gutenberg became very rich from his invention. Because printed books became cheap, learning no longer belonged only to a small group of people. It is sad that such a great man was treated so badly.
Written for this page (an invented student summary), Practice Summary of Source 2 (written for this page; contains four deliberate problems for Activity 2). Original passage written for this page.
Independent Practice15-20 minutes
Students read two more sources, then answer the quiz, which uses both. As they read, they write the central idea of each source in the margin and number its key details. Source 3 is Polo's chapter on the Kaan's posts; gloss "despatches" (official messages) and "in sooth" (in truth). Source 4 comes from van Loon's chapter on the great voyages of discovery; gloss "mortality" (deaths) and "scurvy" (a disease of sailors on long voyages).
1Now you must know that from this city of Cambaluc proceed many roads and highways leading to a variety of provinces, one to one province, another to another; and each road receives the name of the province to which it leads; and it is a very sensible plan. And the messengers of the Emperor in travelling from Cambaluc, be the road whichsoever they will, find at every twenty-five miles of the journey a station which they call Yamb, or, as we should say, the “Horse-Post-House.” And at each of those stations used by the messengers, there is a large and handsome building for them to put up at, in which they find all the rooms furnished with fine beds and all other necessary articles in rich silk, and where they are provided with everything they can want. If even a king were to arrive at one of these, he would find himself well lodged.
[...]
2And in sooth this is a thing done on the greatest scale of magnificence that ever was seen. Never had emperor, king, or lord, such wealth as this manifests! For it is a fact that on all these posts taken together there are more than 300,000 horses kept up, specially for the use of the messengers. And the great buildings that I have mentioned are more than 10,000 in number, all richly furnished, as I told you. The thing is on a scale so wonderful and costly that it is hard to bring oneself to describe it.
3[...] You must know that by the Great Kaan’s orders there has been established between those post-houses, at every interval of three miles, a little fort with some forty houses round about it, in which dwell the people who act as the Emperor’s foot-runners. Every one of those runners wears a great wide belt, set all over with bells, so that as they run the three miles from post to post their bells are heard jingling a long way off. And thus on reaching the post the runner finds another man similarly equipt, and all ready to take his place, who instantly takes over whatsoever he has in charge, and with it receives a slip of paper from the clerk, who is always at hand for the purpose; and so the new man sets off and runs his three miles. [...] And in this way the Emperor, who has an immense number of these runners, receives despatches with news from places ten days’ journey off in one day and night; or, if need be, news from a hundred days off in ten days and nights; and that is no small matter! [...]
Marco Polo, translated by Henry Yule, The Book of Ser Marco Polo, Book II, chapter XXVI, "How the Kaan's Posts and Runners Are Sped Through Many Lands and Provinces" (Source 3: four cuts marked [...]) (1871; this edition 1903). Public domain (published 1903). Source text.
1Of course, there was always the possibility of making the voyage by sea. But the sea was very unpopular in the Middle Ages and for many very good reasons. In the first place, ships were very small. The vessels on which Magellan made his famous trip around the world, which lasted many years, were not as large as a modern ferryboat. They carried from twenty to fifty men, who lived in dingy quarters (too low to allow any of them to stand up straight) and the sailors were obliged to eat poorly cooked food as the kitchen arrangements were very bad and no fire could be made whenever the weather was the least bit rough. The mediaeval world knew how to pickle herring and how to dry fish. But there were no canned goods and fresh vegetables were never seen on the bill of fare as soon as the coast had been left behind. Water was carried in small barrels. It soon became stale and then tasted of rotten wood and iron rust and was full of slimy growing things. As the people of the Middle Ages knew nothing about microbes [...] they often drank unclean water and sometimes the whole crew died of typhoid fever. Indeed the mortality on board the ships of the earliest navigators was terrible. Of the two hundred sailors who in the year 1519 left Seville to accompany Magellan on his famous voyage around the world, only eighteen returned. [...] The greater part of these victims died of scurvy, a disease which is caused by lack of fresh vegetables and which affects the gums and poisons the blood until the patient dies of sheer exhaustion.
2Under those circumstances you will understand that the sea did not attract the best elements of the population. Famous discoverers like Magellan and Columbus and Vasco da Gama travelled at the head of crews that were almost entirely composed of ex-jailbirds, future murderers and pickpockets out of a Job.
Hendrik Willem van Loon, The Story of Mankind, chapter "The Great Discoveries" (Source 4: travel by sea; two cuts marked [...]) (1921). Public domain (published 1921). Source text.
Closure5-10 minutes
Exit ticket: On an index card, write the central idea of Source 1 or Source 2 in one sentence. Then write one true sentence about the topic that you knew before reading and explain why it does not belong in a summary of the source.
Teacher note on the sources and their language: The passages are quoted exactly as translated or printed, with older words such as "hath," "whithersoever," "equipt" and "mediaeval." Yule's square brackets (not the [...] marks) show lines he took from Ramusio's Italian version of Polo's book. Van Loon wrote for children in 1921 and makes confident claims without sources; some are wrong or simplified. The Elzevier (Elzevir) printers worked mainly in Leiden and Amsterdam, not Haarlem (Haarlem was the town of Laurens Janszoon Coster, whom Dutch tradition once credited with inventing printing, which may explain the slip); Gutenberg's type was cast from a lead alloy; and in 1465 the Archbishop of Mainz gave Gutenberg a yearly allowance, so "died in poverty" may be too strong. Historians count about 240 to 270 men on Magellan's ships in 1519, of whom 18 came back on the Victoria in 1522. Van Loon's phrase "ex-jailbirds, future murderers and pickpockets" is an insulting exaggeration about whole crews; discuss it as his opinion. None of the passages contains a slur. Polo's large numbers (300,000 horses, 10,000 buildings) are his own figures and cannot be checked from the text; Chinese records do confirm that the Mongol government ran a large system of post stations and issued paper money.
Homework passages. Polo's chapter on how the Kaan helped people in years of dearth (a shortage of food) and murrain (a disease of cattle), Source 5, and a practice summary of it written for this page.
1Now you must know that the Emperor sends his Messengers over all his Lands and Kingdoms and Provinces, to ascertain from his officers if the people are afflicted by any dearth through unfavourable seasons, or storms or locusts, or other like calamity; and from those who have suffered in this way no taxes are exacted for that year; nay more, he causes them to be supplied with corn of his own for food and seed. Now this is undoubtedly a great bounty on his part. And when winter comes, he causes inquiry to be made as to those who have lost their cattle, whether by murrain or other mishap, and such persons not only go scot free, but get presents of cattle. And thus, as I tell you, the Lord every year helps and fosters the people subject to him.
2[There is another trait of the Great Kaan I should tell you; and that is, that if a chance shot from his bow strike any herd or flock, whether belonging to one person or to many, and however big the flock may be, he takes no tithe thereof for three years. In like manner, if the arrow strike a boat full of goods, that boat-load pays no duty; for it is thought unlucky that an arrow strike any one’s property; and the Great Kaan says it would be an abomination before God, were such property, that has been struck by the divine wrath, to enter into his Treasury.]
Marco Polo, translated by Henry Yule, The Book of Ser Marco Polo, Book II, chapter XXVII, "How the Emperor Bestows Help on His People, When They Are Afflicted with Dearth or Murrain" (Source 5: the whole chapter) (1871; this edition 1903). Public domain (published 1903). Source text.
Marco Polo describes how the Great Kaan helped his people when times were hard. The Kaan sent messengers to find out where people were suffering from dearth caused by bad seasons, storms or locusts. People who had suffered paid no taxes that year and were given grain for food and seed. Kublai Khan was the grandson of Genghis Khan. In winter, people who had lost cattle were given cattle as presents. The Kaan was the kindest ruler who has ever lived.
Written for this page (an invented student summary), Practice Summary of Source 5 (written for this page; contains deliberate problems for the homework). Original passage written for this page.
Differentiation Strategies
For Struggling Students
Give a central idea frame: "Source ___ is mostly about ___. The key details are ___, ___ and ___."
Pre-highlight the key sentences of Source 1 and have students choose the central idea from three written options before writing their own
Gloss older words in the margin: hath, wrought, bast, vermilion, pass current, whithersoever, despatches, equipt, mortality, scurvy
For Advanced Students
Write two summaries of Source 3, one of 60 words and one of 25, and explain which details you cut and why
Find every place in Sources 1 and 3 where Polo tells the reader what to think ("you would be right," "that is no small matter") and explain how a summary should report these
Compare Source 2 with an encyclopedia article on Gutenberg and list the details where the two disagree
Assessment Guidance
What to Look For
Strong work states a central idea that covers the whole source, not one paragraph, and supports it with key details and paragraph numbers. Strong summaries are short, keep the source's facts and numbers exactly, name the author when they report the author's view, and add nothing from prior knowledge or personal opinion. Watch for four errors: a detail offered as the central idea; true background facts that the source never states; a student's judgment ("clever," "cruel," "boring") presented as part of the source; and an author's opinion reported as a plain fact.
02
Classroom Activities
3 Activities
1
Summary Sort
15-20 minGroups of 3
Groups sort ten sentence strips about Source 1 into five piles: Keep, Too minor, Prior knowledge, Opinion and Inaccurate. Then they arrange the Keep strips into a summary.
The Ten Sentence Strips
Workers make paper from the inner bark of mulberry trees.
The paper is cut into pieces of different sizes.
Officials write their names on each piece, and an officer stamps it with a red seal.
Anyone who forges the money is put to death.
People everywhere in the Kaan's lands use the paper to buy and sell.
Mulberry leaves are what silkworms eat.
China had used paper money long before Kublai Khan.
Kublai Khan was a clever ruler.
The pieces of paper money were made of gold.
Nobody dares to refuse the paper money.
Answer Key for the Teacher
Keep: strips 1, 2, 3, 4, 5 and 10 (all in paragraphs 2 and 3 of Source 1).
Too minor: strip 6, which is in the source but is about trees, not money.
Prior knowledge: strip 7 is true (China used paper money centuries before Kublai Khan), but Source 1 does not say it.
Opinion: strip 8 is a judgment the source does not make.
Inaccurate: strip 9 contradicts the source, which says the paper was treated "as if they were of pure gold or silver" (paragraph 2).
Procedure
Cut the strips apart and shuffle them
Each student reads a strip aloud; the group finds the paragraph that decides it before placing it in a pile
Arrange the Keep strips in an order that makes sense and add a first sentence that states the central idea
Read the finished summary to another group
Discussion Questions
Strip 7 is true. Why does it still stay out of the summary?
Strips 6 and 9 both mention something in the source. Why do they go in different piles?
Did your group put strip 10 in Keep? Which paragraph supports it?
Variation for a Shorter Class
Use strips 1, 4, 6, 7, 8 and 9 only, one for each pile except Keep, which gets two.
2
Repair the Summary
15 minPairs
Pairs test the Practice Summary of Source 2 (in the Guided Practice phase) against the source. It contains four deliberate problems. Pairs find each one, name it, and rewrite the summary so that every sentence is accurate and comes from Source 2.
Procedure
Number the sentences of the Practice Summary (there are eight)
For each sentence, find the words in Source 2 that support it, or mark it as a problem
Name each problem: prior knowledge, opinion or inaccurate
Rewrite the summary in 50-70 words
Answer Key for the Teacher
Prior knowledge (sentence 3): the date of Gutenberg's Bible is not in Source 2, which mentions only "the Gothic letters of the Gutenberg Bible" (paragraph 2).
Opinion (sentence 4): "the most important inventor in history" is the student's judgment; van Loon does not say it.
Inaccurate (sentence 6): Source 2 says the opposite: "he soon lost all his money in a law-suit" and "He died in poverty" (paragraph 1).
Opinion (sentence 8): "It is sad" and "such a great man" are the student's feelings, not the source's content.
Discussion Questions
Sentence 3 is true. How could a writer include it without breaking the rules of a summary?
Sentence 7 is close to van Loon's words. What makes it an accurate paraphrase rather than a copy?
Modification for English Learners
Give pairs three labeled cards (prior knowledge, opinion, inaccurate) and tell them which four sentences have problems, so they match a card to each before rewriting.
3
Shrink It
15 minGroups of 3, then whole class
Groups summarize Source 2 three times, each time in fewer words: 50 words, then 25, then a headline of 10 words or fewer. Each cut forces a choice between key and minor details, and the headline is the central idea.
Procedure
Write a 50-word summary of Source 2 on chart paper
Cross out words and details until it is 25 words; list what you cut
Write a headline of 10 words or fewer
Post the three versions and compare them with other groups' versions
Sample Versions for the Teacher
25 words: Van Loon says Gutenberg's printing with separate lead letters led printers across Europe to make cheap books, so learning no longer belonged to a few.
Headline (6 words): Printing Makes Books Cheap for Everyone
Discussion Questions
Which details did every group cut first? Which did every group keep to the end?
Did any headline include an opinion? How would you rewrite it?
Modification for Advanced Students
Groups write a fourth version for Source 3 and compare the steps they took with the ones they took for Source 2.
03
Diagrams & Visual Aids
2 diagrams
Diagram 1: The Central Idea of Source 1 and Its Key Details
The central idea of Marco Polo's chapter sits at the top. The four key details under it come from paragraphs 2 and 3 of Source 1; each one helps prove the central idea. Details such as the color of the paper or the silkworms that eat mulberry leaves are true to the source but too small for a short summary.
Diagram 2: What Belongs in a Summary
A summary reports only what the source says. A true fact you already knew (prior knowledge) and your own judgment (opinion) stay out, even when they are interesting. Green marks a sentence to keep; red marks one to leave out.
04
Homework Assignment
~30 min
RH.6-8.2 Homework: The Great Kaan in Years of Dearth
Directions: Use Source 5 (Marco Polo on how the Kaan helped his people) and the Practice Summary of Source 5, both printed in the Closure phase of the lesson plan. Give paragraph numbers for Source 5 and sentence numbers for the Practice Summary. Answer Problems 1-5 in 2-4 sentences each; Problem 6 is a short summary.
Part 1: The Central Idea (Problems 1-3)
State the central idea of Source 5, paragraph 1, in one sentence of your own. Then quote the sentence in which Polo himself sums up the paragraph.
List two key details from Source 5, paragraph 1, that support the central idea, and quote the words for each.
Paragraph 2 of Source 5 tells what happens when one of the Kaan's arrows strikes a flock or a boat. Is this a key detail that supports the central idea of paragraph 1, or a separate idea? Explain, with a quotation, whether a short summary of Source 5 should include it.
Part 2: The Summary (Problems 4-6)
One sentence of the Practice Summary is true but comes from prior knowledge. Which sentence is it, and how can you tell that it does not come from Source 5?
Which sentence of the Practice Summary gives an opinion? Rewrite it so that it reports Polo's own view accurately, with a quotation from Source 5.
Write your own summary of Source 5 in 40-60 words. Include the central idea and at least three key details, and leave out prior knowledge and your own opinions.
Rubric
Criterion
Full Credit (2 pts)
Partial Credit (1 pt)
No Credit (0 pts)
Central Idea
States a central idea that covers the whole source
States one detail as if it were the central idea
No central idea
Key Details
Chooses key details and quotes or paraphrases them accurately with paragraph numbers
Mixes key and minor details, or paraphrases loosely
Details missing or wrong
Distinct from Prior Knowledge and Opinion
Adds nothing from outside the source and names the author for every judgment
One outside fact or one unlabeled judgment
Several outside facts or personal opinions
Accuracy
Every fact and number matches the source
One small error
Several errors or a changed meaning
05
Quiz: 20 Questions
Interactive, with answers
Instructions
Questions 1-7, 17, 18 and 19 use van Loon's account of sea voyages (Source 4), and Questions 8-13, 15, 16 and 20 use Marco Polo's account of the post system (Source 3); Question 14 uses both. Both passages are printed in the Independent Practice phase of the lesson plan. Your score updates as you answer, and Reset quiz clears everything.
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
Which sentence best states the central idea of Source 4?
Answer: A
Van Loon states the main point near the start of paragraph 1: "the sea was very unpopular in the Middle Ages and for many very good reasons." The rest of the passage lists those reasons and ends with who was willing to sail. Choices B, C and D are details from paragraph 1 that support the central idea; none covers the whole passage.
Question 2 of 20 · Multiple Choice
According to Source 4, why did sailors eat poorly cooked food?
Answer: B
Paragraph 1: "the sailors were obliged to eat poorly cooked food as the kitchen arrangements were very bad and no fire could be made whenever the weather was the least bit rough." Choice A joins two separate details: van Loon's remark about crews in paragraph 2 says nothing about cooks. Choices C and D are not in the source; in fact van Loon says the medieval world knew how to "pickle herring."
Question 3 of 20 · Multiple Choice
Which detail from Source 4 best supports the claim that bad water made sailors sick?
Answer: D
Only choice D links the water to sickness and death (paragraph 1). Choice A is about the water but says nothing about illness. Choices B and C are about food and crew size, not water.
Question 4 of 20 · Multiple Choice
Van Loon writes that of the "two hundred sailors" who left Seville with Magellan in 1519, "only eighteen returned." By his numbers, what percent of the sailors came back?
Answer: C
18 ÷ 200 = 0.09, which is 9 percent. Choice A treats 18 sailors as 18 percent, which would be true only if 100 had sailed. Choice B subtracts 18 from 100. Choice D is the percent who did not return. A summary must keep a source's numbers exactly (historians today count more men on the voyage than van Loon's 200).
Question 5 of 20 · Multiple Choice
Which detail from Source 4 is too minor to include in a short summary?
Answer: C
The low ceilings are a vivid example of how small the ships were (paragraph 1), but the summary already covers that with choice A. Choices A, B and D are the main reasons van Loon gives for the danger of the sea, so a short summary should keep them.
Question 6 of 20 · Multiple Choice
A student's summary of Source 4 says: "All the sailors were criminals." Why does this sentence misrepresent the source?
Answer: A
Van Loon writes that crews were "almost entirely composed of ex-jailbirds, future murderers and pickpockets" (paragraph 2). The student drops "almost" and presents his insulting exaggeration as a fact; an accurate summary says "Van Loon claims that ...". Choice B is wrong because the sentence says nothing about Columbus. Choices C and D name things that are not errors: a summary may leave out names, and short sentences are fine.
Question 7 of 20 · Multiple Choice
Which sentence is an accurate summary of what Source 4 says about Magellan's ships?
Answer: B
Paragraph 1: the vessels "were not as large as a modern ferryboat." Choice A reverses the comparison. Choice C confuses the place and year the voyage began with where the ships were built, which the source does not say. Choice D contradicts "They carried from twenty to fifty men."
Question 8 of 20 · Multiple Choice
According to Source 3, paragraph 1, how far apart were the horse-post-houses on the main roads?
Answer: C
Paragraph 1: the messengers "find at every twenty-five miles of the journey a station." Choice A is the distance between the runners' posts in paragraph 3. Choices B and D are not distances in the passage; "ten" and "a hundred" are numbers of days in paragraph 3.
Question 9 of 20 · Multiple Choice
According to Source 3, paragraph 3, why did each foot-runner wear a belt covered with bells?
Answer: A
Polo writes that the runners wear belts "set all over with bells, so that as they run the three miles from post to post their bells are heard jingling a long way off." The next runner can then be ready. Choices B, C and D give reasons the source does not state; they are guesses, not information from the text.
Question 10 of 20 · Multiple Choice
Which detail from Source 3 best supports the idea that the post system was enormous?
Answer: C
The number of horses in paragraph 2 shows the size of the whole system. Choice A is about how one message is handed on. Choice B is about how roads are named, and choice D about what each runner wears; neither shows size.
Question 11 of 20 · Multiple Choice
A student's summary of Source 3 includes the sentence "Kublai Khan ruled from 1260 to 1294." The sentence is true. Why does it not belong in the summary?
Answer: D
Source 3 never gives the dates of the Kaan's reign, so the sentence comes from outside the source. Choice A is wrong because dates are facts, not judgments. Choices B and C are wrong because the sentence is not in the source at all, so it can neither contradict it nor be one of its details.
Question 12 of 20 · Multiple Choice
Which sentence in a student's summary of Source 3 is an opinion rather than information from the source?
Answer: B
Polo never says how the runners felt; "tired and miserable" is the student's guess and judgment. Choices A, C and D report information from paragraphs 3, 2 and 1.
Question 13 of 20 · Multiple Choice
Polo writes, "Never had emperor, king, or lord, such wealth as this manifests!" (Source 3, paragraph 2). How should a summary report this sentence?
Answer: C
The exclamation is Polo's opinion, so an accurate summary names him as its source. Choice A turns his judgment into a fact the summary cannot prove. Choice B throws away the key numbers in the same paragraph. Choice D mixes the writer's opinion into the summary.
Question 14 of 20 · Multiple Choice
Which statement best compares the central ideas of Sources 3 and 4?
Answer: D
Every paragraph of Source 3 is about the Kaan's roads, post-houses, horses and runners, and Polo calls the system "a thing done on the greatest scale of magnificence that ever was seen" (paragraph 2). Source 4 lists the hardships of the sea: "ships were very small," the food and water went bad, and many sailors died (paragraph 1). Choice A fits only Source 4, because Polo's posts are on land. Choice B has no support: Polo praises the Kaan, and van Loon blames conditions at sea, not rulers. Choice C gives the topic of Source 1, not Source 3, and Columbus is named only once in Source 4 (paragraph 2).
Question 15 of 20 · Short Answer
Using Source 3, paragraph 3, explain in 2-3 sentences how a message traveled from one foot-runner to the next. Include one quotation.
Model answer: Every three miles there was a little fort where runners lived. A runner carried the message three miles to the next post, where "another man similarly equipt, and all ready to take his place" took it over, along with "a slip of paper from the clerk" (paragraph 3), and ran the next three miles. Rubric: full credit for the steps in order and an accurate quotation; partial credit for the steps without a quotation.
Question 16 of 20 · Short Answer
Polo says the Emperor gets news "from places ten days' journey off in one day and night" and "from a hundred days off in ten days and nights" (Source 3, paragraph 3). How many times faster than normal travel is this? Explain how the detail supports the central idea of Source 3.
Model answer: Both examples are ten times faster: 10 days ÷ 1 day = 10, and 100 days ÷ 10 days = 10. The detail supports the central idea that the post system moved the Kaan's news across his empire very fast, because relays of fresh runners never stopped to rest. Rubric: full credit for 10 times, with work shown, and a clear link to the central idea; partial credit for the number only.
Question 17 of 20 · Short Answer
A student writes: "Source 4 shows that Columbus was a bad leader." Is this an accurate summary of what the source says? Explain, using the words of the source.
Model answer: No. Van Loon names Columbus only once, as one of the "Famous discoverers" who "travelled at the head of crews" (paragraph 2). He criticizes the crews, not Columbus, and he never judges Columbus as a leader. The student's sentence is an opinion that goes beyond the source. Rubric: full credit for "no," a quotation and an explanation that the judgment is not in the source; partial credit for "no" with a reason but no quotation.
Question 18 of 20 · Short Answer
Van Loon writes that scurvy "is caused by lack of fresh vegetables" (Source 4, paragraph 1). Today we know that scurvy is caused by a lack of vitamin C, which is found in fresh fruit and vegetables. Should a summary of Source 4 say "scurvy is caused by a lack of vitamin C"? Explain.
Model answer: No. A summary reports what the source says, and Source 4 never mentions vitamin C; that is prior knowledge. The summary should say that van Loon names scurvy as the cause of most deaths. A reader who wants to add the modern explanation can do it in a separate sentence that is clearly marked as outside information. Rubric: full credit for "no" with the reason (prior knowledge) and what the summary should say instead; partial credit for "no" with the reason only.
Question 19 of 20 · Short Answer
In Source 4, paragraph 2, van Loon writes, "Under those circumstances you will understand that the sea did not attract the best elements of the population." What are "those circumstances"? Why is this sentence important to the central idea?
Model answer: "Those circumstances" are the hardships in paragraph 1: tiny ships, bad food, stale water, disease and the many deaths. The sentence ties those details together and states their result, that the sea did not attract the best people. It shows the central idea's second half: the dangers explain who was willing to sail. Rubric: full credit for naming at least three hardships and explaining the link to the central idea; partial credit for one of the two.
Question 20 of 20 · Short Answer
Write a summary of Source 3 in 60-80 words that a classmate who has not read it could trust. Include the central idea and at least three key details, and leave out prior knowledge and opinions.
Model answer: Marco Polo describes the Great Kaan's post system. Roads run out from Cambaluc to the provinces, and every twenty-five miles messengers find a station with rooms where they can rest. Polo says the whole system is so large and costly that it is "hard to bring oneself to describe it." Between the stations, foot-runners wearing belts of bells carry messages in relays, so the Kaan receives news from ten days away in one day and night. Rubric: full credit for a central idea, three accurate key details with the source's numbers and no outside facts or opinions; partial credit for a summary with one error or one added opinion.
0 of 20 answered · 0 correct
06
Frequently Asked Questions
10 Questions
What does RH.6-8.2 mean?
RH.6-8.2 asks students in grades 6-8 to determine the central ideas or information of a primary or secondary source and to write an accurate summary of it, distinct from prior knowledge or opinions. In practice, students find the main point of a history source, choose the key details that support it, and write a short account that a reader could check against the source.
What is a central idea in a history source?
It is the main point that the whole source supports. A useful test is to ask whether every paragraph helps to show it. In a history source the central idea is often a piece of information, such as how a system worked or why something happened, rather than a theme.
What does "distinct from prior knowledge or opinions" mean in RH.6-8.2?
It means the summary contains only what the source says. A true fact the student already knew, such as where a city is today, stays out if the source does not state it, and so does the student's own judgment, such as "clever" or "cruel." If the author gives an opinion, the summary may report it, as long as it says whose opinion it is.
How is RH.6-8.2 different from RI.7.2?
RI.7.2 asks for two or more central ideas and how they develop in an informational text, with an objective summary. RH.6-8.2 applies the summary skill to history sources and names both primary and secondary sources, and it adds the rule that the summary must stay distinct from prior knowledge. In history class that rule matters, because students often know background facts about the period.
How long should a summary of a history source be?
Short: usually a few sentences, and much shorter than the source. For a passage of 300-400 words, a summary of 40-80 words is typical. The length matters less than the content: a central idea, the key details, the source's facts and numbers exactly, and nothing added.
Can a summary include the author's opinion?
Yes, if it names the author. "Polo says you might think the Kaan knew the secret of alchemy" reports his view accurately. "The Kaan knew the secret of alchemy" turns his opinion into a fact, and a summary should not do that.
Should students summarize a primary source differently from a secondary source?
The method is the same, but the wording can show the difference. For a primary source, students often write "Polo describes" or "Polo reports what he saw." For a secondary source, they write "van Loon explains" or "van Loon argues," since the author is interpreting events he did not see.
How is RH.6-8.2 usually assessed?
It is usually assessed with questions that ask for the best statement of a central idea, the best summary among several, or the sentence that does not belong in a summary, and with short written summaries. Teachers can check a written summary against three questions: Is the central idea right? Are the details accurate and key? Is anything added from outside the source?
Why use Marco Polo and van Loon to teach RH.6-8.2?
They give students one primary and one secondary source with clear central ideas and memorable details: paper money made from bark, runners wearing bells, and small, dangerous ships. Both are in the public domain. Van Loon's confident opinions and Polo's large numbers give students real practice in keeping judgments and outside facts out of a summary.
How can parents help a child practice RH.6-8.2 at home?
After your child reads a chapter of a history book, ask for the main point in one sentence and then for three details that prove it. Then ask, "Did the book say that, or did you already know it?" and "Is that the book's idea or yours?"
07
Related Standards
5 standards
These standards connect to RH.6-8.2: prerequisites to review first, parallel standards at the same level, and next steps that build on it.
Before this lesson
RI.5.2Prerequisite
Determine two or more main ideas, explain their supporting details, and summarize a text
Lesson coming soon
Alongside
RI.7.2Parallel
Determine two or more central ideas, trace their development, and write an objective summary