callback
face
no.01 · face
Five faces. Put them back from memory.
untested
lights
no.05 · lights
Five lamps. Lift when they go out.
untested
warm-ups
shade
no.02 · shade
How good are your eyes, really?
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circle
no.03 · circle
Draw a perfect circle. Then four more shapes.
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count
no.04 · count
Estimate faster than you can count.
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