This excel file shows the Greenwich Meridian, lines of longitude and parallels of latitude. It treats the Earth as a sphere. On the interactive sheets the position of two points on the globe can be altered.

There is a...

In this activity, students examine changes to forests in cross-border regions of Africa and Borneo using Google Earth Pro to help identify features shown in satellite images and make measurements. The context allows students to explore the factors which put pressure on forested areas, and what is being done to...

The first two sheets of this excel file remind students of terminology associated with circles and the formulae for area and circumference of a circle. The next five sheets deal with finding the arc length as a fraction of the circumference with worked examples of the...