1. dx a = dy

2. No kid should leave school without being able to expand or reduce an image
in one go
using a photocopier

3. By measuring and determining the ratio3 4
By measuring and determining the ratio
4/3 = = 133%
3/4 = = 75%

4. Medical Notes Senior Nurses discussed problems stemming from nurses’ inability to do simple maths … they put decimal points in the wrong place so patients might receive 10 times more or times less medication than intended

5. What is a nanometer?
1.00nm
Hare’s Ratio