This Teachers TV programme observes a Year Four class at a Bristol primary school where teacher Simon Mills uses the problem of the distribution of colours in a tube of sweets to explore the challenge of understanding frequency and interpreting and presenting data. The class worked in the school's ICT suite over...

A video is shown of a square with its diagonals marked. The resulting regions are, of course, 25% of the whole square. A motion graphic shows one of the diagonals sliding down a side to rest at the mid-point. What percentage of the whole is each region?

This is an adaptation of a print-based task designed by...