In bed

On the table

Ribbons

UFO-nauts

Towers 2

Towers 1

Lys eller mørke?

007

Pythagoras

Still out of the box

Fibonacci

Rubberbands

Wrong way, right way

Twin 2

Twin 1

Division

Pyramid

Worms

Sphere

Pipes in a fishtank

3 in 1

Over and under

Out of the Box 2

Out of the Box 1

Exploitation of nature

Spaceshelf