Beam routing
Turn the mirrors on their turntables so the lamp’s beam lights every numbered lens in order and ends in the sensor. Boards get busier as you go; play them in any order.
Tutorials
3 boards. Three short lessons: one mirror, bolts and blocks, lenses in order.
4×4 bench
12 boards. Small mats with three to six turntables.
5×5 bench
12 boards. Longer routes, more lenses, five to eight turntables.
6×6 bench
12 boards. Busy mats with up to twelve turntables.