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Answer Key

Grade 8 Science: Engineering Design — Optimize Under Constraints

Teacher reference

1.
define/identify
2.
Criteria
3.
Constraints
4.
prototype
5.
improve
6.
data
7.
another
8.
constraints
9.
define problem, research, brainstorm, plan, build prototype, test, evaluate, improve (answers vary in wording)
10.
criteria: span 30 cm, hold 500 g; constraints: straws and tape only, 2 days (answers vary)
11.
reveals flaws and performance before final design; saves resources long-term
12.
padding increases comfort but adds weight/cost (answers vary)

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