Files are stored on a hard drive and are different sizes. In this clip, cartoon dinosaurs are used to demonstrate the size of files. It begins with bits that are made up of 1s and 0s. Eight bits make a byte, 1000 bytes make a kilobyte, 1000 kilobytes make a megabyte, 1000 megabytes makes a gigabyte and 1000 gigabytes make a terabyte.

This clip is from:

Teachers could create lots of cards with different sized files on them such as 465kb, 2 gb, 978mb. The children could put the cards in order of size or play a computer files game in pairs. The children share the cards equally. Then they both turn over one card. The person who has the biggest file wins the cards and the winner is the person who wins all of the file cards.