The Magic MathWorks Travelling Circus returns to Catalyst, the museum of the chemical industry, November 13-24, with a feast of hands-on exhibits to excite children through sight, sound, touch and movement. It will be followed by a new programme of masterclass workshops for secondary students using apparatus to explore maths related to science, November 20-24. Details: Catalyst, Mersey Road, Widnes, Cheshire WA8 ODF, tel 0151 420 1121.