- In physics, maths is used as a tool to solve problems related to the relationships between quantities.
- Without basic maths skills you could still understand some concepts but would not be able to solve problems.
- Sometimes the language of maths is used to explain and describe not just perform calculations.
*Qualitative*descriptions of data include the direction and relationship in which two variables change (e.g. as time increases, distance increases proportionally).*Quantitative*descriptions of data include numerical values (e.g. the speed of the object is 5ms^{-1}).- Graphs are visual representations used to represent relationships.

### Linear graphs

Interpreting the gradient and intercept of straight line graphs

### Substitution

Some examples of how to substitute from one equation into another

### Radians

How the radian is defined and why the angle is the same as the sin of the angle for small angles

### Non-linear graphs

Some common non linear graphs.

### Areas and volumes

If you need one of these in an exam you would normally get given the equation, but not always

### Rearranging equations

Demonstrations of some simple algebra involving rearranging equations.