Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

equal / see-saw


Equal is a see-saw for children, which enables a child to use it even when there is no buddy around. The sand inside of the see-saw acts as a counterweight. If a another child comes to play, the sand can be divided into both sides so that the total weight on both sides is equal. During the movement of the see-saw the sand stays in its position, because the angle of the see-saw stays under 30°-35° (the edge angle of sand). If the sand needs to be moved to the other side of the see-saw, the backrest is used as a lever to exceed an angle of 35°. The transparent cover makes the fascinating visual effect of the sliding sand visible.


Hochschule Hannover

Fachhochschule Hannover
Hannover, Germany

Prof. Gunnar Spellmeyer, Prof. Birgit Weller, Herr Horn

Go to profile

Dewa Bleisinger

Dewa Bleisinger
Berlin, Germany

Dewa Bleisinger