Op-art spider web

This activity is excellent for not so small kids! Let’s make a spider web interweaving two

What is really happening? The square spins and the pictures change so fast the your brain

Colored ropes PDF instruction OP-ART is a short term for optical art. When you look at

Тhis strip has only one edge and one surface. The notions of left and right are

СA walking man animated book to help us explain the principle of animation to kids –

There are several fun ways to check if your eyes always tell the truth… or are

You don’t have a printer? KROKOTAK will show you an easy way to make a shape

The final result is very impressive! You get the illusion of a hand hiding under a

A sense of wonder at the great puzzle of nature; a rhythmic sequence of images… the