Imagine that you are designing an educational toy for pupils of your age. The educational toy is the type that will be picked up and handled. This means that it is important to collect measurements relating to the size of the hand.

Look at the diagram of the hand below. Two dimensions (A and B) are shown on the hand .
1. Measure your hand and write the dimensions A and B at the top of the table below. Use millimetres.
2. Then collect the measurements of all other pupils in the class.
3. Work out the total of columns A and B and then work out the average of each column.

The average dimensions / measurements of A and B are important because the educational toy can be based on these. This will help you design the toy so that it is the right size for the person it is designed for.
When manufactured the educational toy can be said to be ergonomically designed.