Engineering Worksheet: Constraints and Criteria
Engineer's tip (Limits and goals): Constraint = a limit on money, materials, time or size. Criterion = a goal: what the design must do. Check both with numbers: money left ÷ price for how many you can buy; result ≥ goal for “meets it”.
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- 1.📋 Your team’s budget is ₹57. You must buy one roll of tape for ₹15. Straws cost ₹2 each. What is the greatest number of straws you can buy?
- 2.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
- 3.🔍 Which is the odd one out? (a) use only paper and tape (b) spend at most ₹100 (c) float for 1 minute (d) use at most 20 straws
- 4.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a criterion (b) a constraint
- 5.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
- 6.True or false: “be under 30 cm tall” is a constraint (a limit). (a) False (b) True
- 7.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
- 8.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 900 g. Does it meet the criterion? (a) Yes (b) No
- 9.📋 Your team’s budget is ₹51. You must buy one roll of tape for ₹10. Straws cost ₹4 each. What is the greatest number of straws you can buy?
- 10.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a constraint (b) a criterion
- 11.📋 Your team’s budget is ₹78. You must buy one roll of tape for ₹20. Straws cost ₹2 each. What is the greatest number of straws you can buy?
- 12.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 54 cm tall. Is it within the constraint? (a) Yes (b) No
- 13.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 450 g. Does it meet the criterion? (a) No (b) Yes
- 14.📋 A constraint is … (a) a kind of glue (b) a limit you must keep to (c) a goal for success (d) a final test
- 15.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 750 g. Does it meet the criterion? (a) No (b) Yes
- 16.True or false: “float for 1 minute” is a constraint (a limit). (a) False (b) True
- 17.🔍 Which is the odd one out? (a) carry 10 coins (b) hold up 500 g (c) use at most 20 straws (d) roll at least 2 metres
- 18.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion
- 19.True or false: “fit on a school desk” is a constraint (a limit). (a) False (b) True
- 20.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 36 cm tall. Is it within the constraint? (a) Yes (b) No
- 21.🔍 Which is the odd one out? (a) use only paper and tape (b) use at most 20 straws (c) roll at least 2 metres (d) spend at most ₹100
- 22.🔍 Which is the odd one out? (a) finish in 40 minutes (b) float for 1 minute (c) stand in a fan breeze (d) lift a cup of water
- 23.📋 Criteria are … (a) the team names (b) the limits on money (c) goals a design must meet (d) the tools you use
- 24.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 1000 g. Does it meet the criterion? (a) No (b) Yes
- 25.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 650 g. Does it meet the criterion? (a) Yes (b) No
- 26.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a constraint (b) a criterion
- 27.🔍 Which is the odd one out? (a) use at most 20 straws (b) be under 30 cm tall (c) fit on a school desk (d) lift a cup of water
- 28.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a constraint (b) a criterion
- 29.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 64 cm tall. Is it within the constraint? (a) No (b) Yes
- 30.🔍 Which is the odd one out? (a) finish in 40 minutes (b) spend at most ₹100 (c) hold up 500 g (d) fit on a school desk
- 31.📋 Your team’s budget is ₹26. You must buy one roll of tape for ₹15. Straws cost ₹1 each. What is the greatest number of straws you can buy?
- 32.🔍 Which is the odd one out? (a) spend at most ₹100 (b) stand in a fan breeze (c) use at most 20 straws (d) finish in 40 minutes
- 33.📋 Your team’s budget is ₹41. You must buy one roll of tape for ₹15. Straws cost ₹1 each. What is the greatest number of straws you can buy?
- 34.🔍 Which is the odd one out? (a) carry 10 coins (b) use only paper and tape (c) be under 30 cm tall (d) finish in 40 minutes
- 35.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
- 36.📋 Your team’s budget is ₹97. You must buy one roll of tape for ₹10. Straws cost ₹3 each. What is the greatest number of straws you can buy?
- 37.True or false: “keep ice for 1 hour” is a criterion (a goal). (a) True (b) False
- 38.📋 Constraint: the tower must be no taller than 50 cm. The team’s tower is 50 cm tall. Is it within the constraint? (a) No (b) Yes
- 39.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a criterion (b) a constraint
- 40.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 34 cm tall. Is it within the constraint? (a) No (b) Yes
Answer key
- 21
- a constraint
- float for 1 minute
- a criterion
- a criterion
- True
- a constraint
- No
- 10
- a criterion
- 29
- Yes
- No
- a limit you must keep to
- No
- False
- use at most 20 straws
- a criterion
- True
- Yes
- roll at least 2 metres
- finish in 40 minutes
- goals a design must meet
- Yes
- Yes
- a criterion
- lift a cup of water
- a criterion
- Yes
- hold up 500 g
- 11
- stand in a fan breeze
- 26
- carry 10 coins
- a constraint
- 29
- True
- Yes
- a constraint
- Yes
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