Debate Worksheet: Strong and Weak Evidence

Debate lesson 3: Strong and weak evidence · Set 350 · 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: a fact from our science textbook? (a) weak evidence (b) strong evidence
2. 2.🔎 Which source is most reliable in a debate on saving water? (a) an unsigned poster (b) the city water board (c) a chat forward (d) a guess
3. 3.🔎 Strong or weak evidence: an unsigned post with no source? (a) strong evidence (b) weak evidence
4. 4.🔎 Why is this weak evidence? In a debate on sports periods: “Mangoes grow in summer.” (a) not specific (b) not reliable (c) not relevant
5. 5.🔎 Why is this weak evidence? In a debate on reading: “Trains run on tracks.” (a) not relevant (b) not specific (c) not reliable
6. 6.🔎 Strong or weak evidence: a survey of 300 students in our school? (a) strong evidence (b) weak evidence
7. 7.🔎 Why is this weak evidence? “A lot of water gets wasted somewhere.” (a) not relevant (b) not specific (c) not reliable
8. 8.🔎 A fact about cricket in a debate on school uniforms is… (a) not relevant (b) very strong (c) very specific
9. 9.🔎 Strong or weak evidence: a rumour forwarded in a chat group? (a) weak evidence (b) strong evidence
10. 10.True or false: figures from the city water board is weak evidence. (a) True (b) False
11. 11.🔎 Strong or weak evidence: “Everybody knows it.”? (a) weak evidence (b) strong evidence
12. 12.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
13. 13.True or false: a survey of 300 students in our school is weak evidence. (a) True (b) False
14. 14.🔎 Before using a number in a debate, you should… (a) check where it came from (b) hide the source (c) make it bigger (d) round it to 100
15. 15.🔎 Strong or weak evidence: one friend’s guess? (a) weak evidence (b) strong evidence
16. 16.True or false: “A forwarded message says so.” — this is weak because its source is not reliable. (a) True (b) False
17. 17.🔎 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
18. 18.🔎 Why is this weak evidence? “Lots of students like it.” (a) not specific (b) not reliable (c) not relevant
19. 19.🔎 Why is this weak evidence? “I saw it on a random poster once.” (a) not relevant (b) not specific (c) not reliable
20. 20.True or false: measured results from our class experiment is strong evidence. (a) True (b) False
21. 21.🔎 Strong or weak evidence: measured results from our class experiment? (a) weak evidence (b) strong evidence
22. 22.True or false: an unsigned post with no source is strong evidence. (a) False (b) True
23. 23.🔎 What makes evidence strong? (a) old and vague (b) loud and long (c) relevant and reliable (d) funny and short
24. 24.True or false: “Studies show things.” — this is weak because it is not specific (no who, what or how many). (a) True (b) False
25. 25.🔎 Strong or weak evidence: “Lots of people think so.”? (a) strong evidence (b) weak evidence
26. 26.True or false: “Lots of students like it.” — this is weak because it is not relevant to the topic. (a) False (b) True
27. 27.True or false: “A website with no name says so.” — this is weak because its source is not reliable. (a) False (b) True
28. 28.True or false: the school nurse’s record of sick days is weak evidence. (a) True (b) False
29. 29.🔎 Why is this weak evidence? “A forwarded message says so.” (a) not relevant (b) not reliable (c) not specific
30. 30.🔎 Strong or weak evidence: “My cousin said so.”? (a) weak evidence (b) strong evidence
31. 31.True or false: In a debate on school gardens: “Cricket is popular in India.” — this is weak because it is not specific (no who, what or how many). (a) False (b) True
32. 32.True or false: a survey of 300 students in our school is strong evidence. (a) False (b) True
33. 33.🔎 Why is this weak evidence? “A website with no name says so.” (a) not specific (b) not reliable (c) not relevant
34. 34.True or false: “Studies show things.” — this is weak because it is not relevant to the topic. (a) False (b) True
35. 35.True or false: “It is good for many reasons.” — this is weak because its source is not reliable. (a) False (b) True
36. 36.🔎 Why is this weak evidence? “My neighbour heard it from someone.” (a) not specific (b) not relevant (c) not reliable
37. 37.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
38. 38.True or false: “Lots of students like it.” — this is weak because its source is not reliable. (a) True (b) False
39. 39.🔎 Why is this weak evidence? “Studies show things.” (a) not relevant (b) not reliable (c) not specific
40. 40.🔎 Strong or weak evidence: the attendance register for the whole year? (a) weak evidence (b) strong evidence

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