Students learn how to model variations of direct and indirect proportions by setting up an equation. They learn how to solve this equation to find k, the constant of proportionality. As learning progresses students illustrate these linear and non-linear using graphs.
Problem solving lesson on two-way tables and frequency trees.
Three typical exam questions to revise on plotting quadratic, cubic and reciprocal graphs.
Linking cumulative frequency graphs to ratio, percentages and financial mathematics.