Pre-school children can see their teacher inside a giant bubble and follow a trail left by Joe the Puppet at Techniquest, Cardiff's, new Science Theatre show. Part of a programme of nursery days being introduced after Christmas, the show introduces science through familiar items including balloons, balls or bubbles. Another new development is the travelling Discovery Room, housing around 25 curiosity boxes aimed at key stage 2 pupils, which will come to your school for three weeks. Maximum charge is Pounds 117.50 including an introductory talk. Details: 01222 475476.