Effect:

This is a classic "do as I do" trick. Two pieces of paper folded into a triangle are shown from both sides. A spectator is invited to participate. They receive one triangle, and you keep the other.

Now ask him to tear off exactly the same pieces of paper as you.

What remains – for you and the viewer – is a semi-circular structure.

If the viewer unfolds theirs, they see two firmly connected rings. But in your case—and this is incredible!—the rings hang loosely together!

Comes with materials for 10 demonstrations and German instructions! - You can use the templates to make additional copies.