Debate Worksheet: Strong and Weak Evidence

Debate lesson 3: Strong and weak evidence · Set 574 · 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.True or false: “Lots of people think so.” is strong evidence. (a) False (b) True
2. 2.🔎 Which is more specific? (a) lots of students (b) 30 of 40 students
3. 3.🔎 Strong or weak evidence: figures from the city water board? (a) weak evidence (b) strong evidence
4. 4.True or false: measured results from our class experiment is weak evidence. (a) False (b) True
5. 5.True or false: the attendance register for the whole year is weak evidence. (a) True (b) False
6. 6.True or false: “My neighbour heard it from someone.” — this is weak because it is not relevant to the topic. (a) True (b) False
7. 7.🔎 Before using a number in a debate, you should… (a) hide the source (b) make it bigger (c) round it to 100 (d) check where it came from
8. 8.True or false: the school nurse’s record of sick days is weak evidence. (a) True (b) False
9. 9.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
10. 10.True or false: an unsigned post with no source is weak evidence. (a) True (b) False
11. 11.🔎 Why is this weak evidence? “Lots of students like it.” (a) not specific (b) not relevant (c) not reliable
12. 12.True or false: “Studies show things.” — this is weak because it is not specific (no who, what or how many). (a) False (b) True
13. 13.🔎 Why is this weak evidence? “My neighbour heard it from someone.” (a) not reliable (b) not specific (c) not relevant
14. 14.True or false: “A lot of water gets wasted somewhere.” — this is weak because its source is not reliable. (a) True (b) False
15. 15.True or false: “A lot of water gets wasted somewhere.” — this is weak because it is not specific (no who, what or how many). (a) False (b) True
16. 16.🔎 Strong or weak evidence: the attendance register for the whole year? (a) strong evidence (b) weak evidence
17. 17.True or false: “My cousin said so.” is weak evidence. (a) True (b) False
18. 18.🔎 Strong or weak evidence: the school library’s record of books borrowed? (a) strong evidence (b) weak evidence
19. 19.🔎 Why is this weak evidence? “It is good for many reasons.” (a) not relevant (b) not reliable (c) not specific
20. 20.True or false: a story you are not sure about is weak evidence. (a) False (b) True
21. 21.🔎 Strong or weak evidence: a fact from our science textbook? (a) weak evidence (b) strong evidence
22. 22.🔎 Strong or weak evidence: one friend’s guess? (a) weak evidence (b) strong evidence
23. 23.🔎 Why is this weak evidence? In a debate on saving water: “My favourite colour is green.” (a) not reliable (b) not relevant (c) not specific
24. 24.🔎 Why is this weak evidence? “Some people say it helps somehow.” (a) not relevant (b) not specific (c) not reliable
25. 25.True or false: a fact from our science textbook is weak evidence. (a) False (b) True
26. 26.True or false: “Lots of people think so.” is weak evidence. (a) True (b) False
27. 27.🔎 Why is this weak evidence? In a debate on homework: “Mount Everest is very tall.” (a) not specific (b) not reliable (c) not relevant
28. 28.🔎 Why is this weak evidence? “A website with no name says so.” (a) not relevant (b) not reliable (c) not specific
29. 29.True or false: “A website with no name says so.” — this is weak because its source is not reliable. (a) True (b) False
30. 30.True or false: an unsigned post with no source is strong evidence. (a) True (b) False
31. 31.True or false: “My neighbour heard it from someone.” — this is weak because it is not specific (no who, what or how many). (a) True (b) False
32. 32.🔎 Why is this weak evidence? “A lot of water gets wasted somewhere.” (a) not relevant (b) not specific (c) not reliable
33. 33.True or false: the school library’s record of books borrowed is weak evidence. (a) True (b) False
34. 34.🔎 Strong or weak evidence: “Everybody knows it.”? (a) weak evidence (b) strong evidence
35. 35.True or false: a survey of 300 students in our school is strong evidence. (a) False (b) True
36. 36.🔎 A fact about cricket in a debate on school uniforms is… (a) very strong (b) very specific (c) not relevant
37. 37.🔎 Why is this weak evidence? In a debate on sports periods: “Mangoes grow in summer.” (a) not specific (b) not reliable (c) not relevant
38. 38.🔎 Strong or weak evidence: “My cousin said so.”? (a) weak evidence (b) strong evidence
39. 39.🔎 Strong or weak evidence: measured results from our class experiment? (a) strong evidence (b) weak evidence
40. 40.🔎 What makes evidence strong? (a) relevant and reliable (b) old and vague (c) funny and short (d) loud and long

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