Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 899 · 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.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) measure the same way
4. 4.True or false: to change only one thing is poor testing. (a) True (b) False
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.True or false: to record every result is poor testing. (a) True (b) False
9. 9.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
11. 11.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
13. 13.True or false: to repeat each test is good testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) skip writing results (d) guess, do not measure
17. 17.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) hide a failed test (d) change only one thing
18. 18.True or false: to change only one thing is good testing. (a) False (b) True
19. 19.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 420 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 340 g, 330 g and 350 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to use the same load is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
35. 35.True or false: to skip writing results is poor testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) measure the same way
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use a new load each time (d) record every result
39. 39.True or false: to test it only once is good testing. (a) True (b) False
40. 40.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model

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