During Physics we have been learning about springs, and we used our knowledge to work out how much money was carried in a pouch made by Mrs Jakabowski.

Firstly we had to make a big hole in a plastic bag so we could hang it on a spring. We hooked the spring on to the clamp stand, and tied a note with the plastic bag on to the spring. Then we measured the spring with nothing on it. Afterwards we put 1p or 2p in the bag to make 50p. Each time we put in some money, we measured the length of the extension. Then we plotted a graph and weighed the pouch. On the graph we went up to the point where the extension was, and then to the line on the graph. Our group thought that there was 29p in the pouch.

Catherine, IIB