Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
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.
Prof. Gunnar Spellmeyer, Prof. Birgit Weller, Herr Horn