Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 600 · 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.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 410 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) use a new load each time
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) hide a failed test
11. 11.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) repeat each test
16. 16.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) record every result (d) use a new load each time
17. 17.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
19. 19.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to test it only once is poor testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
22. 22.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) measure the same way (d) use the same load
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) change lots at once
24. 24.True or false: to change only one thing is good testing. (a) True (b) False
25. 25.True or false: to measure the same way is poor testing. (a) True (b) False
26. 26.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
27. 27.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
28. 28.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) use the same load (d) guess, do not measure
29. 29.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
30. 30.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
31. 31.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
33. 33.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
34. 34.True or false: to repeat each test is poor testing. (a) True (b) False
35. 35.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
37. 37.True or false: to hide a failed test is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
40. 40.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?

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