Part 2 test: how robots move and sense — Robotics for kids

Robot tip

Find the topic, use the formula — “decide which lesson a question comes from, then use that lesson’s rule”

1. Find the topic: moving, motors, gears, wheels, sensors, echo, line or gyro.
2. Use the rule: teeth × turns; circumference × turns; 17 cm per ms of echo; below the threshold = black; right adds degrees.
3. Check: put your answer back into the rule.

Use it for: Revising Part 2 before programming robots.

Worked example: ⚙️ A 10-tooth gear drives a 30-tooth gear. What is the gear ratio (driven teeth ÷ driver teeth)? → 3

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Lesson 20 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🏅 Move and Sense Champ badge when you pass — and a certificate when you finish all 10 lessons of Part 2 · How robots move and sense. You can still take the test without signing in.

🖨️ Robotics Worksheet: Part 2 Test

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)