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.🔍 Which is the odd one out? (a) carry 10 coins (b) stand in a fan breeze (c) use at most 20 straws (d) keep ice for 1 hour
- 2.🔍 Which is the odd one out? (a) be under 30 cm tall (b) float for 1 minute (c) roll at least 2 metres (d) keep ice for 1 hour
- 3.📋 Criterion: the model bridge must hold at least 200 g. In the test it held 250 g. Does it meet the criterion? (a) No (b) Yes
- 4.True or false: “lift a cup of water” is a criterion (a goal). (a) True (b) False
- 5.📋 Your team’s budget is ₹58. You must buy one roll of tape for ₹15. Straws cost ₹5 each. What is the greatest number of straws you can buy?
- 6.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a criterion (b) a constraint
- 7.📋 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
- 8.True or false: “be under 30 cm tall” is a constraint (a limit). (a) False (b) True
- 9.True or false: “use at most 20 straws” is a constraint (a limit). (a) True (b) False
- 10.True or false: “use at most 20 straws” is a criterion (a goal). (a) True (b) False
- 11.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
- 12.📋 Your team’s budget is ₹42. You must buy one roll of tape for ₹5. Straws cost ₹3 each. What is the greatest number of straws you can buy?
- 13.📋 Your team’s budget is ₹23. You must buy one roll of tape for ₹15. Straws cost ₹1 each. What is the greatest number of straws you can buy?
- 14.🔍 Which is the odd one out? (a) use at most 20 straws (b) lift a cup of water (c) spend at most ₹100 (d) be under 30 cm tall
- 15.📋 Your team’s budget is ₹81. You must buy one roll of tape for ₹20. Straws cost ₹2 each. What is the greatest number of straws you can buy?
- 16.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a criterion (b) a constraint
- 17.🔍 Which is the odd one out? (a) finish in 40 minutes (b) float for 1 minute (c) use only paper and tape (d) be under 30 cm tall
- 18.True or false: “use only paper and tape” is a criterion (a goal). (a) False (b) True
- 19.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a criterion (b) a constraint
- 20.📋 A constraint is … (a) a goal for success (b) a kind of glue (c) a final test (d) a limit you must keep to
- 21.🔍 Which is the odd one out? (a) spend at most ₹100 (b) hold up 500 g (c) roll at least 2 metres (d) float for 1 minute
- 22.📋 Criteria are … (a) the limits on money (b) goals a design must meet (c) the tools you use (d) the team names
- 23.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) yes, always (b) only if it is red (c) yes, it works (d) no, it breaks a limit
- 24.🔍 Which is the odd one out? (a) keep ice for 1 hour (b) float for 1 minute (c) use only paper and tape (d) hold up 500 g
- 25.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
- 26.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a criterion (b) a constraint
- 27.🔍 Which is the odd one out? (a) stand in a fan breeze (b) fit on a school desk (c) be under 30 cm tall (d) finish in 40 minutes
- 28.True or false: “spend at most ₹100” is a criterion (a goal). (a) True (b) False
- 29.True or false: “fit on a school desk” is a constraint (a limit). (a) True (b) False
- 30.📋 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
- 31.📋 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?
- 32.📋 Your team’s budget is ₹71. You must buy one roll of tape for ₹15. Straws cost ₹2 each. What is the greatest number of straws you can buy?
- 33.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 30 cm tall. Is it within the constraint? (a) No (b) Yes
- 34.True or false: “be under 30 cm tall” is a criterion (a goal). (a) True (b) False
- 35.📋 Your team’s budget is ₹68. You must buy one roll of tape for ₹20. Straws cost ₹2 each. What is the greatest number of straws you can buy?
- 36.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 450 g. Does it meet the criterion? (a) No (b) Yes
- 37.📋 Constraint: the tower must be no taller than 80 cm. The team’s tower is 78 cm tall. Is it within the constraint? (a) Yes (b) No
- 38.🔍 Which is the odd one out? (a) be under 30 cm tall (b) spend at most ₹100 (c) finish in 40 minutes (d) roll at least 2 metres
- 39.📋 Constraint: the tower must be no taller than 100 cm. The team’s tower is 104 cm tall. Is it within the constraint? (a) Yes (b) No
- 40.📋 Your team’s budget is ₹132. You must buy one roll of tape for ₹15. Straws cost ₹5 each. What is the greatest number of straws you can buy?
Answer key
- use at most 20 straws
- be under 30 cm tall
- Yes
- True
- 8
- a criterion
- Yes
- True
- True
- False
- a criterion
- 12
- 8
- lift a cup of water
- 30
- a constraint
- float for 1 minute
- False
- a criterion
- a limit you must keep to
- spend at most ₹100
- goals a design must meet
- no, it breaks a limit
- use only paper and tape
- a constraint
- a constraint
- stand in a fan breeze
- False
- True
- Yes
- 26
- 28
- Yes
- False
- 24
- No
- Yes
- roll at least 2 metres
- No
- 23
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