Balancing interactivity with springs and weights.
How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...
Help the bee to build a stack of blocks far enough to save his
friend trapped in the tower.
Exploring balance and centres of mass can be great fun. The
resulting structures can seem impossible. Here are some images to
encourage you to experiment with non-breakable objects of your own.