A short article based on an extract from Topics in Safety, Topic 17 (Electricity), which is freely available to Association for Science Education (
ASE Health and Safety Group
A simple practical activity that uses various methods to help students understand the idea of the expanding universe.
Learn how to set up a hydrogen fuel cell by extending an activity most schools already do – the electrolysis of ‘water’.
Well, of course you know that a battery is made of cells in series, but I have just discovered a great way to show this to a class.