Learn how to plot and read distance-time graphs with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Learn how to read and plot quadratic graphs with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

For example, you could show line graphs for temperature and humidity on top of each other. For this purpose, Excel lets you add a series of data to a chart and plot it on a second y-axis.