№ 11 · you build it
Sun catcher
The light comes on when the sun is out and goes dark when it is not.
- 1Tap the battery, then the sun catcher.
- 2Tap the sun catcher, then the resistor, then the red light.
- 3Tap the red light, then the battery, and slide the sun.
What to look for: Slide the sun up and the light glows. Slide it down to the moon and it fades away. The little grey disc is a resistor that light turns.