Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 30 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.True or false: to change only one thing is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) hide a failed test
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
4. 4.True or false: to skip writing results is good testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
8. 8.🧪 A paper bridge was tested three times. It held 340 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to measure the same way is good testing. (a) False (b) True
10. 10.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) guess, do not measure
16. 16.True or false: to record every result is poor testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) use a new load each time
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) load it with coins
24. 24.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) use a new load each time (d) guess, do not measure
25. 25.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
28. 28.True or false: to use the same load is good testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 180 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to test it only once is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
40. 40.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part

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