It flashes with an eerie glow and emits a weird sound as it sits in the palm of your hand. The two metal contacts on the base of the ball demonstrate harmlessly how children can become part of an electrical circuit.
24 Feb 2015
Very good product. Worked straight away. Packaged well.
19 Dec 2014
Kids loved them -really enhanced the lesson. Seem relatively easy to damage!
24 Nov 2014
07 Nov 2014
29 Oct 2014
22 Oct 2014
23 May 2014
Good price and great science aid
Sign up to receive important updates, news and information: