Dylan is growing a sunflower. He measured its height. On the 1st of July it was 80 cm high. On the 14th of July it was 120 cm high. How much had it grown in that time?

In science at school you have looked at simple data to investigate how things change over time. Plants and animals grow. The seasons bring different weather. The nights get longer in the winter and shorter in the summer. This quiz is all about using simple data to investigate how things change. Can you say how much they have changed over time? Can you say why they have changed? Have a go, and see just how many you can get right.