A cycle, not a straight line
A cycle, not a straight line

A mathematical problem does not usually tell you which method to use. You must choose and combine suitable tools such as algebra, graphs, statistics or probability.
Step-by-step lessons on AQA A Level Maths 1.2.6 The problem solving cycle. Each one builds up to exam-style questions. Build fluency with the core pure algebra and calculus toolkit early, since almost every mechanics and statistics topic on the course depends on it.