Build Your Own AI Project Worksheet

AI for students lesson 23: Design a tiny AI project · Set 324 · 40 questions

AI tip (Accuracy = correct ÷ total × 100): Steps: 1 choose a problem → 2 collect examples → 3 label them → 4 check and correct bad labels (clean the data) → 5 split into training and test sets → 6 train → 7 test with new examples → 8 measure accuracy → 9 improve the data and retest. Accuracy = correct ÷ total × 100. Wrong = total − correct. Expected right = accuracy ÷ 100 × total. Keep some examples apart for testing (for example one fifth); the rest are for training.

1. 1.🎯 Tara’s bird-song app was tested on 20 new bird songs and got 12 right. What is its accuracy in percent?
2. 2.🧪 Why must you test a model on examples it has NOT seen? (a) to make it faster (b) to see if it learned (c) to make it bigger (d) to save paper
3. 3.📦 Arjun collected 160 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
4. 4.📋 Planning an AI project: which comes first — fix it and test again or work out the accuracy? (a) fix it and test again (b) work out the accuracy
5. 5.📋 Planning an AI project: which comes first — test on new photos or let it learn patterns? (a) test on new photos (b) let it learn patterns
6. 6.📋 Planning an AI project: which comes first — improve data, retest or work out the accuracy? (a) improve data, retest (b) work out the accuracy
7. 7.❌ Meera’s spam spotter was tested on 24 new messages and got 23 right. How many did it get wrong?
8. 8.🧪 You can plan a simple AI project with… (a) paper and examples (b) a secret password (c) nothing at all (d) only a big robot
9. 9.❌ Vihaan’s leaf identifier was tested on 22 new leaf photos and got 14 right. How many did it get wrong?
10. 10.🎯 Vihaan’s bird-song app was tested on 25 new bird songs and got 19 right. What is its accuracy in percent?
11. 11.📋 Planning an AI project: which comes first — work out the accuracy or recheck every label? (a) work out the accuracy (b) recheck every label
12. 12.📋 Planning an AI project: which comes first — train the model or work out the accuracy? (a) train the model (b) work out the accuracy
13. 13.🧪 What is accuracy? (a) correct + total (b) total × 2 (c) correct ÷ total × 100 (d) total − correct
14. 14.📋 Planning an AI project: which comes first — label each example or try unseen examples? (a) label each example (b) try unseen examples
15. 15.❌ Arjun’s fruit sorter was tested on 50 new fruit photos and got 48 right. How many did it get wrong?
16. 16.📦 Saanvi collected 190 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
17. 17.📦 Kabir collected 170 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
18. 18.❌ Ananya’s fruit sorter was tested on 42 new fruit photos and got 41 right. How many did it get wrong?
19. 19.📦 Meera collected 60 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
20. 20.⚖️ Two spam spotter models were tested on the same 25 messages. Model A got 19 right and Model B got 15 right. How many percentage points more accurate is Model A?
21. 21.⚖️ Two handwriting reader models were tested on the same 25 handwritten letters. Model A got 17 right and Model B got 15 right. How many percentage points more accurate is Model A?
22. 22.🎯 Nisha’s leaf identifier was tested on 4 new leaf photos and got 3 right. What is its accuracy in percent?
23. 23.📋 Planning an AI project: which comes first — work out the accuracy or fix it and test again? (a) work out the accuracy (b) fix it and test again
24. 24.📋 Planning an AI project: which comes first — calculate percent right or fix it and test again? (a) calculate percent right (b) fix it and test again
25. 25.🎯 Vihaan’s bird-song app was tested on 4 new bird songs and got 2 right. What is its accuracy in percent?
26. 26.🎯 Vihaan’s bird-song app is 70% accurate. If it is tested on 40 new bird songs, how many should it get right?
27. 27.📋 Planning an AI project: which comes first — split train and test or train the model? (a) split train and test (b) train the model
28. 28.❌ Tara’s leaf identifier was tested on 38 new leaf photos and got 37 right. How many did it get wrong?
29. 29.📦 Diya collected 180 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
30. 30.📋 Planning an AI project: which comes first — calculate percent right or gather many examples? (a) calculate percent right (b) gather many examples
31. 31.📦 Ishaan collected 60 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
32. 32.❌ Kabir’s handwriting reader was tested on 20 new handwritten letters and got 17 right. How many did it get wrong?
33. 33.❌ Ishaan’s leaf identifier was tested on 42 new leaf photos and got 40 right. How many did it get wrong?
34. 34.📋 Planning an AI project: which comes first — label each example or split train and test? (a) label each example (b) split train and test
35. 35.❌ Nisha’s recycling sorter was tested on 37 new waste photos and got 35 right. How many did it get wrong?
36. 36.📋 Planning an AI project: which comes first — correct bad labels or work out the accuracy? (a) correct bad labels (b) work out the accuracy
37. 37.📋 Planning an AI project: which comes first — collect fruit photos or try unseen examples? (a) collect fruit photos (b) try unseen examples
38. 38.📋 Planning an AI project: which comes first — split train and test or gather many examples? (a) split train and test (b) gather many examples
39. 39.📋 Planning an AI project: which comes first — improve data, retest or try unseen examples? (a) improve data, retest (b) try unseen examples
40. 40.📦 Kabir collected 70 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?

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