Mathematics

Measure the height or distance of any object using your hand.

Make pinhole predictions.

Use index cards to show how light plus light equals dark.

Light plus light equals dark.

by Paul Dancstep • August 25, 2015

Do prime numbers "feel" different than the other numbers?

Compare the brightness of two light sources with an oil spot on a white card.

$Science activity that explores fractal patterns and how they’re formed$

Make dendritic diversions and bodacious branches.

Track down elusive boron and its place in the periodic table.

Cameras taught us the math of vision—find out how.

Get Bach to the fundamentals.

Surprisingly, a flat panel rolls smoothly on non-circular rollers.

Listen to the rhythm of falling weights.

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