This challenge has had them going on and off for hours.
And move your body from one side of this board to the other:
while keeping the lasers on the stars. (There is a green Expo-marker star drawn on each side of the board.)
- no changing the angle
- hold the vertex against your sternum
- always face the board, and no one stands between you and the board (safety, you know.)
The children. They have some questions.
I know there are boring ways to get this point across with paper and pencil, but LASERS. THAT'S WHY.