This is one in a large series of short videos from NCETM showing how people use maths at work. See the others here.
This exercise will give you practice in writing big numbers in words. Many thanks to Sheffield Renewables for the use of their Top Trump cards to make this exercise.
Before you start here is an example. The St Wilfreds Centre has solar panels that produce 3250 kwh of electricity. In words this is three thousand two hundred and fifty kwh. Kwh stands for kilo watt hours.
Here is a fascinating site to find out about the Golden Ratio and the human face.
Don’t miss the flash application where you can fit a mask to some famous faces to see if their facial proportions match the golden ratio.
You will find the Golden Ratio appears not just in the human body, but in architechture, design nature, cosmology, photo composition, art and much more.
Angles of elevation and depression– how to use simple trigonometry to measure the height of tall buildings or objects. A great resource from mymaths.