Techniquest, Cardiff Bay

An exciting array of more than 160 hands-on exhibits at Wales’ popular interactive science centre. Keep the family entertained for hours with puzzles and activities including: Test your reaction times, launch a hot air balloon, fire a rocket and loads more.

Details: techniquest.org.

Explore @ Bristol

Move water uphill, put your mind and body to the test or create your own show on Play TV. Be awed by cosmic rays, get in a spin at the turbulent orb, or try to control a loop of string with a mind of its own then tour the night sky in the planetarium.

Details: at.bristol. org.uk.