Well, you’d better dust off your protractor because ... because its height can actually change – not because of changes in measuring methods, but because geological events like earthquakes.

1. Now construct your tower. If you think you can make it taller, keep redesigning it until you can't go any higher. 2. When you are finished building, measure the height of your tower.

The height of a tree would be measured in metres (m). Why not see how much you know about this topic already? Then work through the page and see if you can beat your score. You can measure ...