Debate Worksheet: Strong and Weak Evidence

Debate lesson 3: Strong and weak evidence · Set 55 · 40 questions

Debater's tip (Relevant, specific, reliable): Relevant: does it talk about the topic of the motion? Specific: does it say exactly who, what, where or how many? “30 of 40 students” beats “lots of students”. Reliable: can we trust where it came from? Records, textbooks and official bodies beat rumours and unsigned posts.

1. 1.🔎 Strong or weak evidence: the school library’s record of books borrowed? (a) weak evidence (b) strong evidence
2. 2.🔎 Which source is most reliable in a debate on saving water? (a) the city water board (b) a guess (c) a chat forward (d) an unsigned poster
3. 3.True or false: the school library’s record of books borrowed is strong evidence. (a) True (b) False
4. 4.True or false: “Lots of students like it.” — this is weak because it is not specific (no who, what or how many). (a) False (b) True
5. 5.True or false: one friend’s guess is weak evidence. (a) False (b) True
6. 6.🔎 Before using a number in a debate, you should… (a) check where it came from (b) make it bigger (c) hide the source (d) round it to 100
7. 7.True or false: “I think I dreamt it.” — this is weak because it is not relevant to the topic. (a) False (b) True
8. 8.True or false: In a debate on saving water: “My favourite colour is green.” — this is weak because it is not specific (no who, what or how many). (a) True (b) False
9. 9.🔎 Why is this weak evidence? In a debate on sports periods: “Mangoes grow in summer.” (a) not specific (b) not reliable (c) not relevant
10. 10.True or false: “A website with no name says so.” — this is weak because its source is not reliable. (a) True (b) False
11. 11.True or false: a rumour forwarded in a chat group is strong evidence. (a) False (b) True
12. 12.True or false: one friend’s guess is strong evidence. (a) True (b) False
13. 13.True or false: “A lot of water gets wasted somewhere.” — this is weak because its source is not reliable. (a) False (b) True
14. 14.🔎 Strong or weak evidence: one friend’s guess? (a) weak evidence (b) strong evidence
15. 15.🔎 Strong or weak evidence: measured results from our class experiment? (a) weak evidence (b) strong evidence
16. 16.🔎 Strong or weak evidence: a fact from our science textbook? (a) weak evidence (b) strong evidence
17. 17.🔎 What makes evidence strong? (a) loud and long (b) old and vague (c) relevant and reliable (d) funny and short
18. 18.True or false: “Lots of students like it.” — this is weak because its source is not reliable. (a) True (b) False
19. 19.🔎 Strong or weak evidence: a rumour forwarded in a chat group? (a) strong evidence (b) weak evidence
20. 20.🔎 Why is this weak evidence? In a debate on school gardens: “Cricket is popular in India.” (a) not relevant (b) not specific (c) not reliable
21. 21.True or false: In a debate on saving water: “My favourite colour is green.” — this is weak because it is not relevant to the topic. (a) False (b) True
22. 22.True or false: an unsigned post with no source is strong evidence. (a) False (b) True
23. 23.True or false: “Studies show things.” — this is weak because it is not relevant to the topic. (a) False (b) True
24. 24.True or false: a rumour forwarded in a chat group is weak evidence. (a) True (b) False
25. 25.🔎 Why is this weak evidence? “Studies show things.” (a) not reliable (b) not specific (c) not relevant
26. 26.True or false: an unsigned post with no source is weak evidence. (a) True (b) False
27. 27.🔎 Why is this weak evidence? “Some people say it helps somehow.” (a) not reliable (b) not relevant (c) not specific
28. 28.True or false: In a debate on homework: “Mount Everest is very tall.” — this is weak because its source is not reliable. (a) True (b) False
29. 29.True or false: “Everybody knows it.” is weak evidence. (a) False (b) True
30. 30.True or false: a story you are not sure about is strong evidence. (a) False (b) True
31. 31.🔎 Why is this weak evidence? “Lots of students like it.” (a) not reliable (b) not relevant (c) not specific
32. 32.🔎 Strong or weak evidence: “Lots of people think so.”? (a) weak evidence (b) strong evidence
33. 33.True or false: “I saw it on a random poster once.” — this is weak because it is not relevant to the topic. (a) False (b) True
34. 34.🔎 A fact about cricket in a debate on school uniforms is… (a) very strong (b) not relevant (c) very specific
35. 35.🔎 Why is this weak evidence? In a debate on saving water: “My favourite colour is green.” (a) not relevant (b) not reliable (c) not specific
36. 36.🔎 Strong or weak evidence: figures from the city water board? (a) weak evidence (b) strong evidence
37. 37.🔎 Why is this weak evidence? “I think I dreamt it.” (a) not reliable (b) not specific (c) not relevant
38. 38.True or false: figures from the city water board is weak evidence. (a) True (b) False
39. 39.🔎 Why is this weak evidence? “It is good for many reasons.” (a) not reliable (b) not relevant (c) not specific
40. 40.True or false: “A forwarded message says so.” — this is weak because it is not relevant to the topic. (a) False (b) True

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