Pupils needing extra support:

Could be provided with the mosaic with the fewest pieces for the Attention grabber activity; could use the Knowledge organiser to help them answer the questions throughout the lesson; could work with a partner to save three different versions of an image.

Pupils working at greater depth:

Should use Excel to help them calculate exactly how many bits there are in each version of the image; could be challenged to find a way to download a bitmap directly from the internet using the ‘advanced Search’ dropdown within Google and select File Type = BMP (the children will probably not find a BMP they like but explain that they are rare to download because of their massive file size and JPEG is the standard).