SL.8.3: Evaluating a Speaker's Argument and Spotting Irrelevant Evidence
In plain English: SL.8.3 is the Common Core grade 8 ELA standard that asks students to outline a speaker's argument and specific claims, judge whether the reasoning is sound and the evidence relevant and sufficient, and notice the moment a speaker brings in evidence that does not bear on the claim. It builds on SL.7.3 and prepares for SL.9-10.3 in high school.
Delineate a speaker's argument and specific claims, evaluating the soundness of the reasoning and relevance and sufficiency of the evidence and identifying when irrelevant evidence is introduced.
Common Core State Standards for English Language Arts & Literacy · Domain: Speaking and Listening Standards · Cluster: Comprehension and Collaboration · Official standard
In grade 7, students learned to outline a speaker's argument and to test each claim: is the evidence relevant, is there enough of it, and is the reasoning sound? SL.8.3 adds one more listening job: identifying when irrelevant evidence is introduced. Speakers often slip in something that sounds like support, such as a story about a relative, praise for something else or a true fact about the topic, that does nothing for the claim being made. A careful listener notices the moment it comes in and sets it aside before judging the rest.
The lesson uses a real speech first. In December 1906, Mark Twain spoke to members of Congress in favor of a bill that would make copyright (an author's legal right to be the only one who prints and sells a book) last for the author's life plus fifty years. His statement mixes serious claims, numbers, comparisons and jokes, so students must sort them. The class evaluates the first excerpt together (Source 1) and the second in pairs (Source 2). Then students work alone on Source 3, a speech written for this page in which an invented eighth grader speaks to her school board about library fines; the quiz is built on it. The teacher reads every source aloud while students listen with the text face down, because the standard is about listening, and then students study the transcript.
Learning Objectives
By the end of this lesson, students will be able to:
Delineate a speaker's argument in one sentence and list the specific claims in the order the speaker makes them
Evaluate whether the evidence for each claim is relevant and sufficient, counting the cases and asking where they come from
Evaluate the soundness of a speaker's reasoning, including comparisons and cause-and-effect steps
Identify the moment a speaker introduces irrelevant evidence and explain why it does not support the claim
Prior Knowledge Required
Students should already be comfortable with:
Delineating a speaker's argument and judging the relevance and sufficiency of the evidence SL.7.3
Tracing and evaluating the argument and specific claims in a written text RI.7.8
Finding a percent of a quantity as a rate per 100 6.RP.A.3
"Your friend says: 'You should try out for the soccer team. Tryouts are free, the team practices right after school, so you can still take the late bus, and my uncle played soccer in college.' Which reason does nothing to show that YOU should try out?"
Take a few answers. The uncle is about soccer, the right topic, but not about this claim: his college career says nothing about whether tryouts fit your time, money or skills. Name it: irrelevant evidence is support that does not bear on the claim, even when it is true and on the topic. Then ask how students would decide whether the other two reasons are enough. Today they practice both jobs while listening, when they cannot reread.
Direct Instruction20 minutes
Part 1: The words of the standard. Hand out the two tables and Diagram 1. Students keep them for the whole lesson.
Words for SL.8.3
Word
Meaning
Listener's question
Delineate
Lay out the argument and each claim in the speaker's order
What does the speaker want, and what are the separate points?
Argument
The overall position or request
What should listeners believe or do?
Claim
One point the speaker wants accepted as part of the argument
If this is true, does the claim become more likely?
Irrelevant evidence
Support that does not bear on the claim, even if true and on the topic
When did it come in, and what is it really about?
Sufficient
Enough relevant evidence, from fair sources, for a claim of this size
How many cases? Who counted? Would more change my mind?
Sound reasoning
The claim follows from the evidence with no missing step
Could the evidence be true and the claim still be false?
Comparison (analogy)
Arguing that two cases are alike, so what is true of one is true of the other
Are the two cases alike in the way that matters?
Words in Twain's statement
Word
Meaning here
copyright
The legal right to be the only one who may print and sell a work
bill
A proposed law that Congress has not yet passed
the decalogue
The Ten Commandments in the Bible
forty-two years
The longest an American copyright lasted in 1906: 28 years, plus one renewal of 14
confederates
Partners in a scheme
affluence
Wealth
Part 2: Listen, then read. Students turn Source 1 face down. Read it aloud in a dry, serious voice, the way Twain delivered his jokes. Students jot the request and a word or two for each point they hear, and they make a small mark in the margin whenever they think Twain says something that does not help his case. Then they turn the page over and follow along during a second reading.
1I am interested particularly and especially in the part of the bill which concerns my trade. I like that extension of copyright life to the author's life and fifty years afterward. I think that would satisfy any reasonable author, because it would take care of his children. Let the grandchildren take care of themselves. That would take care of my daughters, and after that I am not particular. I shall then have long been out of this struggle, independent of it, indifferent to it.
2It isn't objectionable to me that all the trades and professions in the United States are protected by the bill. I like that. They are all important and worthy, and if we can take care of them under the Copyright law I should like to see it done. I should like to see oyster culture added, and anything else.
3I am aware that copyright must have a limit, because that is required by the Constitution of the United States, which sets aside the earlier Constitution, which we call the decalogue. The decalogue says you shall not take away from any man his profit. I don't like to be obliged to use the harsh term. What the decalogue really says is, “Thou shalt not steal,” but I am trying to use more polite language.
4The laws of England and America do take it away, do select but one class, the people who create the literature of the land. They always talk handsomely about the literature of the land, always what a fine, great, monumental thing a great literature is, and in the midst of their enthusiasm they turn around and do what they can to discourage it.
5I know we must have a limit, but forty-two years is too much of a limit. I am quite unable to guess why there should be a limit at all to the possession of the product of a man's labor. There is no limit to real estate.
6Doctor Hale has suggested that a man might just as well, after discovering a coal-mine and working it forty-two years, have the Government step in and take it away.
7What is the excuse? It is that the author who produced that book has had the profit of it long enough, and therefore the Government takes a profit which does not belong to it and generously gives it to the 88,000,000 of people. But it doesn't do anything of the kind. It merely takes the author's property, takes his children's bread, and gives the publisher double profit. He goes on publishing the book and as many of his confederates as choose to go into the conspiracy do so, and they rear families in affluence.
Mark Twain (Samuel L. Clemens), Copyright, excerpt 1: Mark Twain's statement to Congress, paragraphs 2-8 as printed (Source 1) (1906; this edition 1910). Public domain (published 1910). Source text.
Delineating the argument (Source 1, paragraphs 1-7)
What is Twain's argument, and what claims does he make, in order?
Result: Argument: Congress should pass the bill, because a copyright of the author's life plus fifty years is fair (paragraph 1), and Twain doubts there should be any limit at all (paragraph 5). Claims in order: the new term would take care of an author's children (1); taking away an author's profit is a kind of stealing (3); the law singles out authors and discourages literature (4); forty-two years is too short, since land and a coal mine have no time limit (5-6); and when copyright ends, the profit goes to publishers instead of the public (7). Paragraph 2 makes no claim about authors at all.
Irrelevant material introduced (Source 1, paragraph 2)
At what moment does Twain bring in something that does nothing for his argument, and what should a listener do with it?
Result: It comes in right after his first claim, when he turns to the other trades the bill covers and says, "I should like to see oyster culture added, and anything else." Oyster farming has nothing to do with how long an author's rights should last. It is a joke, not evidence, so it neither helps nor hurts any claim. A listener marks it, enjoys it and does not count it. At "I am aware that copyright must have a limit" (paragraph 3), he is back on his argument.
Soundness (Source 1, paragraph 3)
Twain says the Ten Commandments forbid stealing, so taking away an author's profit is wrong. Is the reasoning sound?
Result: No. The step only works if the book still belongs to the author after forty-two years, and that is exactly what the hearing is trying to decide. Calling it stealing assumes the point instead of proving it. Twain even admits in the same paragraph that the Constitution requires copyright to have a limit. The commandment is relevant to theft in general, but it cannot settle whether this is theft.
Relevance and soundness of a comparison (Source 1, paragraphs 5-6)
Twain says there is no time limit on owning land, and Doctor Hale compares an author to a man whose coal mine is taken after forty-two years. Are these comparisons relevant, and do they hold?
Result: They are relevant, since the question is whether a book is property like other property. But the cases differ in a way that matters: only one person at a time can use a piece of land or dig the same coal, while a book can be printed for millions of readers without taking anything from the author's own copy. Because the comparison skips that difference, it is a weak support. A listener should ask why the Constitution treats writings differently from land.
Walk through Diagram 1 with the four examples. Point out the order: a listener sets aside what is irrelevant first, because it should not make relevant evidence look stronger or weaker. Stress two ideas. Marking a claim unsound or not sufficient does not mean the claim is false; Twain's bill might still have been a good idea. And one weak claim does not decide the whole argument: a listener judges the argument by what is left.
Guided Practice15 minutes
Teacher note, before Source 2. Twain's words are quoted exactly as printed in 1910. In paragraph 1, he pokes fun at a man who is "strenuous about race-suicide," most likely President Theodore Roosevelt, who was famous for praising "the strenuous life." Around 1906, Roosevelt and others used "race suicide" to warn that native-born white Americans were having fewer children than immigrant families, a fear tied to prejudice against immigrants. Twain uses the man only as a comic example, and the speech does not argue for or against the idea. Explain the phrase in a sentence or two before the reading, then keep the discussion on Twain's comparison.
Read Source 2 aloud once with the text face down, then have pairs read it. Pairs answer three questions, one sentence each: (a) Twain compares copyright to a law limiting families to twenty-two children. Is the comparison relevant, and does it hold? (b) Check his numbers in paragraph 3: how many books does "one book in 1000" of 220,000 come to, and does that fit "one author per year"? (c) Is the list of authors in paragraph 4 sufficient evidence?
1Why, if a man who is not even mad, but only strenuous—strenuous about race-suicide—should come to me and try to get me to use my large political and ecclesiastical influence to get a bill passed by this Congress limiting families to twenty-two children by one mother, I should try to calm him down. I should reason with him. I should say to him, “Leave it alone. Leave it alone and it will take care of itself. Only one couple a year in the United States can reach that limit. If they have reached that limit let them go right on. Let them have all the liberty they want. In restricting that family to twenty-two children you are merely conferring discomfort and unhappiness on one family per year in a nation of 88,000,000, which is not worth while.”
2It is the very same with copyright. One author per year produces a book which can outlive the forty-two-year limit; that's all. This nation can't produce two authors a year that can do it; the thing is demonstrably impossible. All that the limited copyright can do is to take the bread out of the mouths of the children of that one author per year.
3I made an estimate some years ago, when I appeared before a committee of the House of Lords, that we had published in this country since the Declaration of Independence 220,000 books. They have all gone. They had all perished before they were ten years old. It is only one book in 1000 that can outlive the forty-two year limit. Therefore why put a limit at all? You might as well limit the family to twenty-two children.
4If you recall the Americans in the nineteenth century who wrote books that lived forty-two years you will have to begin with Cooper; you can follow with Washington Irving, Harriet Beecher Stowe, Edgar Allan Poe, and there you have to wait a long time. You come to Emerson, and you have to stand still and look further. You find Howells and T. B. Aldrich, and then your numbers begin to run pretty thin, and you question if you can name twenty persons in the United States who—in a whole century have written books that would live forty-two years. Why, you could take them all and put them on one bench there [pointing]. Add the wives and children and you could put the result on, two or three more benches.
Mark Twain (Samuel L. Clemens), Copyright, excerpt 2: Mark Twain's statement to Congress, paragraphs 10-13 as printed (Source 2) (1906; this edition 1910). Public domain (published 1910). Source text.
Debrief.(a) The comparison is relevant to Twain's point that a limit touching very few people is not worth having. It does not hold, because the two limits do different jobs: the family limit helps no one, while the copyright limit is meant to let everyone print and read old books freely, and it matters for exactly the few books that last. The comparison leaves out the public's side. (b) 220,000 ÷ 1,000 = 220 books. From 1776 to 1906 is 130 years, and 220 ÷ 130 ≈ 1.7 books a year, which roughly fits "one author per year" and "can't produce two authors a year." But the paragraph also says "They have all gone. They had all perished before they were ten years old," and a book cannot all perish and still be one of the 1 in 1,000 that lasts; the overstatement weakens trust in the numbers. The estimate is Twain's own, made "some years ago," and he names no source for it. (c) The list comes from memory, and "twenty persons" in a century is about one lasting author every five years, not one a year. Accept the objection that one author, such as Cooper, can write lasting books in many different years; the point is that Twain's counts are rough and not checked. Finish by showing Diagram 2.
Independent Practice15 minutes
Students work alone on Source 3, written for this page: an invented eighth grader speaks to her school board about overdue fines, the small daily charges for a late library book. Read it aloud once while students listen with the text face down and write the argument, the claims and any moment where they heard irrelevant evidence. Then they read the transcript and answer the quiz. Questions 1-10, 16, 17, 19 and 20 are about Source 3, questions 14 and 15 return to Source 1, and questions 11-13 and 18 use new speakers.
1Good evening, members of the board. My name is Tessa Morales, and I'm in eighth grade at Cedar Hill Middle School. Tonight I'm asking the board to end overdue fines in the libraries of all four district middle schools, starting in January. Students would still pay for any book they lose. They just wouldn't be charged ten cents for every day a book is late.
2First, fines keep students from using the library. At Cedar Hill, anyone who owes more than $5 in fines can't check out books until the fines are paid. Last week our librarian, Mr. Ruiz, looked up the records for me. Of our 840 students, 126 have blocked accounts right now. He also asked the librarians at the other three middle schools, and their records show between 11 and 17 percent of students blocked.
3Second, fines don't get books back any faster. My grandmother was a school librarian for thirty-one years, and she always told me that a library belongs to everyone. Riverside Unified, the district next to ours, stopped charging fines two years ago. Its head librarian told the Riverside Record that books are coming back about as often as they did before.
4Third, the fines bring in very little money. According to the district's budget report, the four middle school libraries collected $1,260 in fines last year. The same report shows that the district spends $84,000 a year on books, magazines and supplies for those libraries. So the fines pay for only a tiny part of that cost.
5Fourth, ending fines will get students reading more. The Cedar Hill library just got twelve new beanbag chairs, and they're really comfortable. During our book fair week in October, checkouts doubled, from about 300 books in a normal week to about 600. So once the fines are gone, checkouts will double too.
6Some people say that without fines, students won't bother to return books. But students would still get a reminder email every week, and they would still have to pay for any book they lose. So there would still be good reasons to bring books back.
7Please vote to end overdue fines in January. At my school alone, fines are keeping 126 students from borrowing books, and across the district the fines cover only a tiny part of what the libraries spend. Thank you.
Written for this page (the student, librarians, schools, districts, newspaper, board and all numbers are invented), End Library Fines at Our Middle Schools (Source 3: an eighth grader speaks to the school board). Original passage written for this page.
Closure5 minutes
Exit ticket: "Write one sentence a speaker might say that is true and on the topic of school start times, but irrelevant to the claim 'Our school should start later.' Then explain in one sentence why it does not help." Read three aloud and have the class vote on whether each is truly irrelevant.
Teacher note. Twain's words are quoted exactly as printed in 1910. The note before Source 2 in the Guided Practice explains the phrase "race-suicide." Some facts help with the evaluation: in 1906 an American copyright lasted 28 years plus one renewal of 14; the bill Twain spoke for did not pass as written, and the Copyright Act of 1909 set 28 years plus a renewal of 28. Today most works are protected for the author's life plus 70 years. Source 3, its speaker, schools, districts and numbers are invented, and the transcript says so.
Homework. Tonight students listen to a real persuasive speaker, map the argument, catch any irrelevant evidence and judge the rest. Go over the directions and the rubric before they leave.
Differentiation Strategies
For Struggling Students
Before the Twain reading, give a version of Source 1 with each paragraph's claim underlined, so students can focus on judging the support
During the Source 3 read-aloud, pause after each paragraph and have students hold up a card: C for a claim, E for relevant evidence, X for irrelevant evidence
Give a partly filled argument map for Source 3 with the argument written in and one box per paragraph
For Advanced Students
Write the strongest reply a member of Congress could give Twain in 1906, using the difference between a book and a coal mine
Rewrite paragraph 3 of Source 2 so that its evidence would satisfy a careful listener: what source, count and time span should Twain have given?
Write a 30-second speech that answers Source 2, paragraph 1, by showing one way the family-limit comparison and the copyright limit are not alike
Assessment Guidance
What to Look For
Strong answers name the exact words where irrelevant evidence comes in and say what that evidence is really about. Watch for three mix-ups: calling weak evidence irrelevant (Twain's list of authors in Source 2 is on the point but rough), calling a joke or a story evidence at all, and judging a claim by whether the student agrees with the request. Listen also for students who throw out a whole speech because of one irrelevant sentence; the standard asks them to set it aside and judge what remains.
02
Classroom Activities
3 Activities
1
Detour Detector
12 minPairs
Pairs read 8 short claim cards aloud. Each card has a claim and two or three sentences of support; on some cards, one sentence is a detour, evidence that does not bear on the claim.
The 8 Cards (invented speakers)
Card 1: "The band room needs a humidifier. (a) The music teacher's gauge read 18% humidity on six mornings in January. (b) Very dry air can crack wooden instruments such as clarinets. (c) Our band earned a top rating at the spring festival."
Card 2: "Our school should offer a sign language elective. (a) In a survey of 200 students, 71 said they would sign up. (b) A teacher at the high school next door has an open period and has offered to teach it. (c) The high school's sign language club has a logo designed by a student."
Card 3: "The park needs a second trash can by the playground. (a) On three Saturdays in a row, the one can overflowed before noon. (b) Volunteers picked up 14 bags of litter near the playground in September."
Card 4: "The science wing needs more electrical outlets. (a) Room 12 has 4 outlets for 32 students' laptops. (b) Students tripped over extension cords twice this month. (c) The science teachers have won three teaching awards."
Card 5: "The gym should stay open at lunch in winter. (a) On the 9 rainy days in December, about 150 students crowded into the cafeteria after eating. (b) Two PE teachers have offered to supervise. (c) The gym floor was refinished last summer and looks great."
Card 6: "New students should get a printed map of the building. (a) On the first day, the office counted 63 students asking for directions. (b) The building has three floors and two wings."
Card 7: "Our class should tour the county water treatment plant. (a) Our spring science unit is about where drinking water comes from. (b) The plant gives free tours to school groups. (c) The bus company just bought new buses with phone chargers."
Card 8: "Our team needs new soccer goals. (a) Both nets have holes a ball can pass through. (b) The referee stopped two games this season to check the holes. (c) Our best player scored 11 goals this season."
Procedure
Partner A reads a card aloud; Partner B listens without looking and names the detour sentence by its letter, or says "no detour"
Partner B explains what the detour is really about, then the partners switch roles for the next card
For each card, the pair decides whether the relevant sentences that are left are enough for the claim, and writes one question for the speaker on a sticky note
Check: six cards have exactly one detour and two cards have none
Discussion Questions
Cards 1 and 8 are both about the right activity (band, soccer), yet the detour sentences do not help. What makes a sentence on the topic still irrelevant?
Card 2 says 71 of 200 students would sign up. That is about 36%, not a majority. Is it still relevant evidence for offering an elective? Is it sufficient?
2
Red Card, Green Card
13 minWhole class, then pairs
The teacher reads a short invented speech aloud one sentence at a time, at speaking speed. Students hold up a green card when they hear relevant evidence and a red card the moment irrelevant evidence is introduced.
The Speech (invented: an eighth grader speaks to the principal)
"I'm asking you to make one weekend each month a no-homework weekend for eighth graders."
"In our class survey, 64 of the 90 eighth graders who answered said they spend more than an hour on homework most weekends."
"Our school's homework policy was written in 2015."
"Ms. Park, our counselor, says that 19 of the 27 students who came to her about stress in October named homework as one reason."
"Also, the eighth-grade cross-country team went undefeated this season."
"One free weekend a month would give students time to rest and come back ready to learn."
Procedure
Read each sentence once. Students raise a card or keep both down (for the request and for the speaker's reasoning)
After each sentence, call on one red and one green holder to explain
Pairs then compute the percents in sentences 2 and 4, rounded to the nearest whole percent
Answer check: sentences 2 and 4 are green; sentences 3 and 5 are red
Discussion Questions
Sentence 3 is about homework, the right topic. Why is it still red?
Sentence 4 counts only students who went to the counselor. Is that a fair group for a claim about all eighth graders?
Variation for Online Classes
Students type R or G in the chat after each sentence, and the teacher shares the tally before revealing the answer.
3
Plant One, Catch One
15 minGroups of 4
Each student writes a 30-second speech with a claim, two pieces of relevant evidence and one planted piece of irrelevant evidence. The group listens and tries to catch the plant.
Procedure
Each student picks a school or town issue and writes a claim, two relevant pieces of evidence and one irrelevant piece that sounds convincing, numbering the sentences
Speakers read their speeches aloud, once, at normal speed
Listeners write the number of the sentence they think is the plant and one reason, then reveal at the same time
The speaker scores one point for each listener fooled; each listener scores one point for a catch with a correct reason
Discussion Questions
Which plants were hardest to catch, and what made them sound relevant?
After the plant was removed, was the relevant evidence left in each speech enough for its claim?
Modification for Large Classes
Have two groups pair up: one group reads, the other catches, then they switch. Collect the best plants for a class set of practice cards.
03
Diagrams & Visual Aids
2 diagrams
Diagram 1: Four Questions While You Listen
Ask the questions in order for every claim. Evidence that is not about this exact claim is irrelevant: note the moment the speaker brought it in, then set it aside before judging what is left. Relevant evidence then has to be enough, and the claim has to follow from it. The band at the bottom lists signs that irrelevant evidence is about to be introduced.
Diagram 2: Argument Map of Twain's Statement
The argument of Sources 1 and 2 with the six parts the class evaluates in the Direct Instruction and Guided Practice phases, each with its main problem. S1 and S2 mean Source 1 and Source 2. Show it at the end of the Guided Practice debrief.
04
Homework Assignment
~30 min
SL.8.3 Homework: Catch the Detours in a Real Speech
Directions: Choose a real speaker who is trying to persuade an audience, and listen to 3-5 minutes: a public comment at a school board or city council meeting (many are posted online), a student government speech, a debate, or a speech in a news report. Do not use Twain or any source from the lesson. Listen once all the way through without stopping, then again with notes. Write down who spoke, to whom and when. Answer in complete sentences.
Part 1: Map the Argument (Problems 1-2)
Name the speaker, the audience and the occasion. Then state the argument in one sentence that says what the speaker wants the audience to believe or do.
List every specific claim in the order you heard it, with a time stamp or the words that begin it. Mark any part that is a joke, a story or an aside rather than a claim.
Part 2: Weigh the Evidence (Problems 3-4)
Find one moment when the speaker introduces evidence that does not bear on the claim being made. Quote or closely paraphrase it, give its time stamp and explain what it is really about. If you find none, explain how you checked each piece.
Choose two claims that do have relevant evidence. For each, describe or count the evidence, decide whether it is sufficient for a claim of that size, and name one more piece of evidence that would make it stronger.
Part 3: Judge the Reasoning (Problems 5-6)
Choose the claim whose reasoning you find weakest. Explain in your own words the step from the evidence to the claim, and decide whether it holds. If it does not, say what else could explain the evidence or what the speaker left out.
Set aside everything irrelevant and every claim that failed a test. In four to six sentences, decide whether what is left is enough to accept the argument, and write the question you would most like to ask the speaker.
Rubric
Criterion
Full Credit (2 pts)
Partial Credit (1 pt)
No Credit (0 pts)
Delineation
Argument stated as a position or request; claims listed in the speaker's order with time stamps; asides marked
Argument stated as a topic only, or claims incomplete or out of order
Missing or inaccurate
Irrelevant evidence
A real moment identified, quoted or paraphrased with a time stamp, and explained, or a clear account of how each piece was checked
A moment named without explanation, or weak evidence mislabeled as irrelevant
Missing
Relevance and sufficiency
Evidence for two claims described and judged enough or not enough, with a specific addition proposed
Judgment for one claim only, or no addition proposed
Missing
Reasoning and verdict
The step from evidence to claim explained and tested, and a verdict based only on what survived
Reasoning judged without explanation, or verdict based partly on set-aside material
Missing
05
Quiz: 20 Questions
Interactive, with answers
Instructions
Questions 1-10, 16, 17, 19 and 20 are about Source 3, the library fines speech in the Independent Practice phase of the lesson plan; questions 14 and 15 return to Source 1, the first excerpt of Mark Twain's statement; questions 11-13 and 18 use new speakers. Source 3 and all new speakers are invented. Your score updates as you answer, and Reset quiz clears everything so you or your students can try again.
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
What is Tessa's overall argument in Source 3?
Answer: C
Tessa states her request in paragraph 1 ("I'm asking the board to end overdue fines in the libraries of all four district middle schools") and repeats it in paragraph 7. Choice A contradicts her: she says students "would still pay for any book they lose." Choice B turns her evidence about the budget into a request she never makes. Choice D takes a detail from paragraph 5 for the argument.
Question 2 of 20 · Multiple Choice
Which list gives Tessa's four numbered claims in the order she makes them?
Answer: A
Paragraphs 2-5 open with "First," "Second," "Third" and "Fourth": fines keep students from the library, fines don't get books back faster, fines bring in little money, and ending fines will get students reading more. Delineating keeps the speaker's order. Choice B starts with paragraph 4. Choice C moves paragraph 5 up to second. Choice D swaps the first two claims.
Question 3 of 20 · Multiple Choice
In paragraph 2, 126 of Cedar Hill's 840 students have blocked accounts. What percent is that?
Answer: D
126 ÷ 840 = 0.15, or 15%, within the 11 to 17 percent she reports for the other three schools. Choice A divides the wrong way: 840 ÷ 126 ≈ 6.7. Choice B is the share of students who are not blocked: 714 ÷ 840 = 0.85, or 85%. Choice C divides by 1,000 instead of 840: 126 ÷ 1,000 = 12.6%.
Question 4 of 20 · Multiple Choice
Which sentence in paragraph 3 introduces irrelevant evidence?
Answer: B
The claim of paragraph 3 is about how fast books come back. The grandmother's saying is about who libraries are for; it may be true and it is about libraries, but it says nothing about return speed, so it is irrelevant to this claim. Choices A and C are the relevant evidence: a district that dropped fines and a report on its returns. Choice D is the claim itself, not evidence.
Question 5 of 20 · Multiple Choice
How should a listener evaluate the Riverside evidence in paragraph 3?
Answer: A
Riverside is a district that tried the exact change Tessa wants, so its results bear on the claim: relevant. But it is one district, the report gives no numbers, and "about as often" is vague, so the evidence is thin for a claim that fines do not speed returns. Choice B confuses a different place with a different topic; comparable districts are fair evidence. Choice C trusts the expert without checking what she actually reported. Choice D describes a step Tessa never takes.
Question 6 of 20 · Multiple Choice
Paragraph 4 says the libraries collected $1,260 in fines and the district spends $84,000 a year on them. What share of that cost do the fines cover?
Answer: C
1,260 ÷ 84,000 = 0.015, or 1.5%, which supports the claim that fines bring in little. Choice A drops a zero: 1,260 ÷ 8,400 = 15%. Choice B divides the wrong way: 84,000 ÷ 1,260 ≈ 66.7, read as a percent. Choice D is the share the fines do not cover, 100% - 1.5%.
Question 7 of 20 · Multiple Choice
In paragraph 5, Tessa says the library "just got twelve new beanbag chairs, and they're really comfortable." Why is this irrelevant to her claim?
Answer: D
Her claim is that ending fines will get students reading more. The chairs might make the library pleasant, but they arrived while fines were still charged, so they show nothing about what ending fines would do. Choice A is a problem of checking, not relevance. Choice B treats the chairs as evidence that is too small, which is a sufficiency judgment about evidence that does not bear on the claim at all. Choice C invents a difference between a reading room and a library.
Question 8 of 20 · Multiple Choice
Also in paragraph 5, checkouts doubled during book fair week, "So once the fines are gone, checkouts will double too." What is wrong with this reasoning?
Answer: B
The jump happened during a special event, with fines still in place, so the book fair explains it; nothing links it to fines. The evidence could be true and the claim still false. Choice A mistakes a real number for sound reasoning. Choice C is wrong, since checkouts are a fair measure of borrowing. Choice D is false arithmetic: 2 × 300 = 600.
Question 9 of 20 · Multiple Choice
In paragraph 6, Tessa answers people who say students won't bother to return books without fines. Why is her answer reasonable?
Answer: A
Her answer meets the objection directly: if reminders continue and lost books still cost money, the main reasons to return a book remain. That is a fair step, though it is reasoning, not data. Choice B overstates it; she promises no such thing. Choice C describes paragraph 2, not paragraph 6, and paragraph 6 has no numbers. Choice D attacks the other side, which Tessa never does.
Question 10 of 20 · Multiple Choice
Which two of Tessa's four numbered claims are well supported: relevant, sufficient evidence and sound reasoning?
Answer: C
Paragraph 2 uses the librarian's records for all 840 Cedar Hill students and the other three schools' records, and a blocked account really does keep a student from borrowing. Paragraph 4 uses the district's budget report, and the arithmetic holds. Choice A includes paragraph 3, whose relevant evidence is thin and which also brings in the grandmother. Choices B and D include paragraph 5, whose chairs are irrelevant and whose reasoning is unsound.
Question 11 of 20 · Multiple Choice
A resident asks the city for a stop sign at Pine Street and 3rd Avenue: (1) "Neighbors counted 41 cars going over 25 mph there in one hour." (2) "Two children were nearly hit there in May." (3) "Pine Street was named for the pine trees that once lined it." (4) "A stop sign would slow every driver at the corner." Where is irrelevant evidence introduced?
Answer: D
The claim is about safety at one corner. The history of the street's name is a true detail about the place, but it does nothing to show that a stop sign is needed. Choice A judges who counted, a sufficiency question, not relevance. Choice B is wrong because near misses bear directly on danger. Choice C is the speaker's reasoning about what the sign would do, which is on the point.
Question 12 of 20 · Multiple Choice
A student says: "The new vocabulary app is making everyone in our grade better at English. My two best friends started using it, and both of their quiz grades went up." What is the main problem with the evidence?
Answer: B
Quiz grades are on the point, so the evidence is relevant, but two friends are too few, and friends of the speaker are not a fair sample of the grade. Choice A is false. Choice C mistakes "all the cases I know" for enough cases. Choice D confuses who is speaking with whether the evidence bears on the claim.
Question 13 of 20 · Multiple Choice
A speaker says: "Every student on the honor roll this year has a public library card. So if you get a library card, you'll make the honor roll." Which evaluation is accurate?
Answer: A
Two things appearing together does not show that one causes the other; the same habits could lead to both. The evidence could be true and the claim still false, so the reasoning is unsound. Choice B mistakes "every" for proof of cause. Choice C invents a rule about ownership. Choice D would add more of the same kind of evidence, which would not fix the missing step.
Question 14 of 20 · Multiple Choice
In Source 1, paragraph 4, Twain says the laws of England and America single out authors and "do what they can to discourage" literature. What is the main weakness of this claim?
Answer: C
The paragraph states the claim twice but offers nothing to back it: no author who stopped writing, no book that went unwritten, no numbers. So the claim may be true, but it is not supported. Choice A misses that American law is named too. Choice B describes a step Twain never takes. Choice D accepts the claim because of who said it, which is not evidence.
Question 15 of 20 · Short Answer
In Source 1, paragraph 7, Twain says that when copyright ends the government "merely takes the author's property, takes his children's bread, and gives the publisher double profit." Evaluate this claim: is the evidence relevant and sufficient, and is the reasoning sound?
Model answer: The claim is relevant to his argument, and part of the reasoning is sound: when copyright ends, a publisher can keep selling the book without paying the author, so money that went to the author's family stays with the publisher. But Twain gives no evidence at all, such as prices or sales, so the claim is not sufficiently supported. The reasoning also leaves something out: once anyone may print the book, other publishers can sell it too, and competition can lower the price, so the public may gain after all. Rubric: 2 points for judging relevance and noting the missing evidence with a reason; 2 points for explaining what the reasoning leaves out.
Question 16 of 20 · Short Answer
Delineate Source 3: state Tessa's argument in one sentence, then list her four numbered claims and her answer to the other side in order, each with its paragraph number.
Model answer: Argument: the board should end overdue fines at the four district middle school libraries starting in January (paragraph 1, repeated in paragraph 7). Claims: (1) fines keep students from using the library (paragraph 2); (2) fines don't get books back faster (paragraph 3); (3) fines bring in very little money (paragraph 4); (4) ending fines will get students reading more (paragraph 5). Answer to the other side: reminders and payment for lost books would still give students reasons to return books (paragraph 6). Rubric: 1 point for the argument as a request, 2 points for the claims in order with paragraphs, 1 point for the rebuttal.
Question 17 of 20 · Short Answer
Rewrite the evidence in paragraph 3 of Source 3 so that it supports the claim "fines don't get books back any faster." Remove what is irrelevant, keep what is relevant and name one piece of evidence Tessa should add.
Model answer: Cut the grandmother's saying, because it is about who libraries are for, not return speed. Keep Riverside, since it tried the same change. Add numbers, for example: "Riverside's records show that 89 percent of books came back within two weeks the year before it dropped fines and 88 percent the year after." Better still, add a second district or a before-and-after count from a fine-free trial at one Cedar Hill grade. Rubric: 1 point for cutting the grandmother with a reason; 1 point for keeping Riverside; 2 points for a specific added piece of evidence with numbers or a second source.
Question 18 of 20 · Short Answer
A student running for class treasurer says: (1) "I have kept the money records for my family's lemonade stand for three summers." (2) "I earned an A in math this year." (3) "My dog won a blue ribbon at the county fair." (4) "I will post a report of every dollar the class spends on the bulletin board each month." Name the sentence that introduces irrelevant evidence and explain why. Then decide whether sentence 2 is relevant.
Model answer: Sentence 3 introduces irrelevant evidence: the dog's ribbon may be true and impressive, but it says nothing about handling class money. Sentence 2 is relevant, because a treasurer adds and checks numbers, although an A in math does not prove the student will be careful or honest with money; sentence 1 is closer evidence of that. Rubric: 2 points for naming sentence 3 with a reason; 2 points for judging sentence 2 as relevant with a limit noted.
Question 19 of 20 · Short Answer
In paragraph 5 of Source 3, checkouts rose from about 300 to about 600 during book fair week. By what percent did they increase? Then explain what comparison Tessa would need to show that ending fines raises checkouts.
Model answer: The increase is 600 - 300 = 300 books, and 300 ÷ 300 = 1, so checkouts rose by 100%. That jump happened during the book fair, with fines still in place, so it cannot show what ending fines does. Tessa would need to compare checkouts in normal weeks before and after a school stopped charging fines, for example at Riverside, or during a fine-free trial at Cedar Hill with no book fair in either period. Rubric: 1 point for 100%; 1 point for naming the book fair as the real cause; 2 points for a fair before-and-after comparison.
Question 20 of 20 · Short Answer
Set aside everything in Source 3 that is irrelevant or unsound. In four or five sentences, decide whether what is left is enough to support Tessa's request, and name the one piece of evidence the board should ask for.
Model answer: Once the grandmother, the beanbag chairs and the book fair step are set aside, two strong claims remain: fines block 15 percent of Cedar Hill students and 11 to 17 percent at the other schools (paragraph 2), and fines cover only 1.5 percent of library spending (paragraph 4). Her answer to the other side (paragraph 6) is also reasonable. The weak spot is return speed, supported only by one vague report from Riverside. That is probably enough for the board to try the change, but it should ask for Riverside's actual return numbers before and after it dropped fines. Rubric: 2 points for naming what is set aside and what survives; 1 point for a clear verdict; 1 point for a specific request for evidence.
0 of 20 answered · 0 correct
06
Frequently Asked Questions
10 Questions
What does SL.8.3 mean?
SL.8.3 means that eighth graders can listen to a speaker, lay out the argument and each claim, judge whether the reasoning is sound and the evidence relevant and sufficient, and notice when the speaker brings in evidence that does not bear on the claim. "SL" stands for Speaking and Listening, and "delineate" means to outline the parts in order.
What is irrelevant evidence?
Irrelevant evidence is support that does not bear on the claim, even when it is true and on the topic. If a speaker argues that the school needs more buses and mentions that the bus drivers are friendly, the drivers' friendliness is about buses but not about how many buses are needed. A useful test: if the evidence were false, would the claim be any weaker? If not, it is irrelevant.
How is SL.8.3 different from SL.7.3?
SL.8.3 keeps everything in SL.7.3 and adds one job: identifying when irrelevant evidence is introduced. In grade 7, students judge whether each claim's support is relevant, sufficient and sound. In grade 8, they also track the moment a speaker slips in something off the point, and they set it aside before judging what is left.
Is irrelevant evidence the same as a red herring?
Not exactly: a red herring is irrelevant material brought in on purpose to pull attention away from the question. All red herrings are irrelevant, but not all irrelevant evidence is a trick; speakers often add a story or a fact they care about without meaning to mislead. SL.8.3 asks students to notice both, whatever the speaker's intent.
How can students tell irrelevant evidence from weak evidence?
Ask whether the evidence would help if there were much more of it. More of weak evidence helps: one rider's complaint that the 7:40 bus is late is thin, but a month of the driver's arrival times would be strong. More of irrelevant evidence never helps: a hundred facts about how new and clean the buses are still say nothing about whether they arrive on time. Weak evidence fails the sufficiency test; irrelevant evidence fails the relevance test and is set aside.
Why does this SL.8.3 lesson use a Mark Twain speech?
Twain's 1906 statement to Congress on copyright mixes real claims, numbers, comparisons and jokes, so students must sort what counts as evidence from what does not. Its subject is still alive: the bill he spoke for did not pass as written, Congress passed a new copyright law in 1909, and today most works are protected for the author's life plus 70 years. The teacher reads it aloud first, because SL.8.3 is a listening standard.
How do students evaluate a speech they can only hear once?
They take quick notes in a set form: the request, a word for each claim and a mark whenever they hear evidence, with a different mark for anything that seems off the point. Signal words help: "First" or "Second" often opens a claim, and "Also" or a sudden story often brings in something that does not fit. With practice, students can sort a speech while it is still going.
How is SL.8.3 assessed?
In class, it is assessed through listening tasks: students hear a speech, then outline the argument, judge the support and name any irrelevant evidence. Some state tests include a listening section in which students hear a recording and answer questions about it. The homework on this page, which asks students to evaluate a real speech with time stamps, works well as a graded task.
How is SL.8.3 related to RI.8.8?
They ask for the same evaluation in two forms: RI.8.8 for a written text and SL.8.3 for a speaker. Both ask students to judge soundness, relevance and sufficiency and to recognize when irrelevant evidence is introduced. The listening version is harder, because students cannot reread, so this lesson has them hear each source before they read it.
How can parents practice SL.8.3 at home?
Use ads, interviews and even family debates. After one plays, ask: "What does the speaker want? Which reason was actually about that, and which one was just there to sound good?" Children who can name the off-the-point reason, and explain why it does not help, are doing exactly what SL.8.3 asks.
07
Related Standards
5 standards
These standards connect to SL.8.3: prerequisites to review first, parallel standards at the same level, and next steps that build on it.
Before this lesson
SL.7.3Prerequisite
Delineate a speaker's argument and judge its reasoning and evidence