The ground trembles when T-Rex enters the scene. Head and body rock back and forth, jaws snap open and closed and legs move. Lots of motion and lots of fun.

Teach children about the mechanics of motion with these fascinating wooden moving model kits.

Whether you're 9 or 90, you'll get hours of enjoyment assembling the wooden cams, push rods, levers and cranks and understanding what makes it all tick.

First created in a cow shed in the Welsh hills, Timberkits are now enjoyed by children and adults throughout the world.

All kits are made of natural, sustainable wood and can be easily painted or decorated when finished to create a fascinating showpiece.

Video of the Timber T-Rex in action: