When electricity comes into our homes, it makes a meter turn. The number of times the meter turns tells us how much electricity we are using – and how much we have to pay for it, too.

Get an adult to show you the meter in your house or school. Some meters have little dials that turn, but others are digital.

Whichever kind it is, make a note of the reading. Go back to the meter half an hour later and see what the new reading is.

How can you work out how much electricity has been used in a whole HOUR?