№ 4 · you build it
Two lights, two paths
Give each light its own path and they both go bright.
- 1Make the red light's path: battery, resistor, red light, battery.
- 2Make the green light's own path with the other resistor.
- 3Look at them both.
What to look for: Both lights are bright now. Each one has its own way home, so neither has to share.