4:27

Impossible triangles

9:05

Wild knots

7:01

Screw/screw gearing

6:37

Why Penrose Tiles Never Repeat

3:50

Genus two holonomy

3:41

Why don't Rubik's cubes fall apart?

17:37

A Ciência das Bolas

15:53

Experimentos Científicos de Nível 1 a 100