Follow and and learn how to make a simple circuit using a DC motor, some AA batteries and a switch. Visitors will have the chance to build their very own train. Design the body of the train, then attach axels, and finally a motor. How fast can you go? Are there improvements you can make?

A tunnel is simply a hollow tube cut through soil or rock, but there is nothing simple about the construction of a man-made tunnel. In this challenge, junior engineers will receive a design brief, then need to build a tunnel out of recycled material. Saturday 26 February, 11:00am – 1:00pm Saturday 12 March, 11:00am –