Light bounces, bends, and focuses — and every mirror and lens you've ever used is just those three tricks, arranged on purpose. Mirrors and lenses both, this time.
The Path Through Unit 6
Build a working periscope, magnifier, or simple telescope out of mirrors and lenses. Aim it, calibrate it, and prove it actually does what it's supposed to do.
Design a low-vision aid — a magnifier, a corrective lens setup — for a stated need and a real size or cost constraint. Mirrors alone won't cut it here; this one needs the lenses too.