Session 3 — Loops and Geometry

Opening concept: A loop that runs 4 times with a drive + 90° turn should make a square. Does it?

Activity:

• EdBlocks track: Activity 20–21 (music + performance) combined into one session
• EdScratch track: Unit 3 (Got Loops?) — loop blocks, forever loops, nesting
• Shared challenge: program Edison to drive a rectangle using loops. Measure and verify.
• Extension: Quad Squad setup — can you program a triangle? A pentagon? What’s the turn angle for each?

Engineering connection: Math predicts behavior. When it doesn’t match, something is wrong and findable.

Materials: Devices, USB cables, EdScratch student sheets Unit 3, rulers, protractors, printed angle reference