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Lesson 82 of 84 · Scientific Models
ExperimentEngineering Constraints and Criteria (Part 4)
What You'll Learn
Engineers must consider constraints (limitations like cost, time, and materials) and criteria (requirements the solution must meet) when designing solutions to problems.
Key Words
- design
- constraint
- criteria
Materials Needed
- scissors
- straws
- paper clips
Safety First
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
Steps
Step 1 — Read
Read about Scientific Models and write down three key facts.
Step 2 — Do
Conduct a design challenge: build a car powered only by a balloon. Measure how far it travels and iterate on your design at least twice.
Step 3 — Observe
Watch carefully for any changes and note the time.
Step 4 — Record
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is peer review?