Ratio Grids can be used whenever you have a problem that starts with 3 numbers, and you have to times and divide. They are a clear way of laying out your working, and knowing which order to do the calculation.
You will need a calculator to do the practice questions, but first, here are 2 videos. The first shows you how to solve a small ratio grid, the second deals with the larger ones:
Looking for a website that helps you to learn about Plans and Elevations? And you would like to have some fun as well? Oh, and have to work out new approaches to problems which look easy at first but aren’t?
You will need:
A computer / laptop
Squared and isometric paper (links to print your own are below)