RGB Light Color Mixing
Red+green, green+blue, and all three produce new light colors including white.
Teaching & key ideas
What you do: Overlap colored beams in different combinations.
What students see: Red+green, green+blue, and all three produce new light colors including white.
Why it works: Light colors add together differently from paint colors.
Question to ask: What color appears when all three overlap?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: What color appears when all three overlap?