3-11 years

Shadow puppets

Dificultad: ★

Safe Sun viewer 2

Dificultad: ★

Safe Sun viewer 1

Dificultad: ★

Periscope

Dificultad: ★

Making a refractor telescope

Dificultad: ★

Making a reflector telescope

Dificultad: ★

Building simple Sundials

Dificultad: ★