Direct and inverse proportion. Percentages as a special case of proportion. Compound measures (speed, density). Conversions between units.
NC outcomes (paraphrased)
Pupils should be taught to:
- Change freely between related standard units (e.g. time, length, area, volume/capacity, mass)
- Use scale factors, scale diagrams, and maps
- Express ratio in different forms; divide a quantity in a given ratio
- Solve problems involving direct and inverse proportion
- Use compound units (speed, rates of pay, prices per unit)
- Solve problems involving percentage change including percentage increase, decrease and original value problems
Forward to KS4
Direct precursor to KS4 Maths — Ratio, proportion, and rates of change.
Cross-curriculum
- Life and Work — Financial Literacy (percentage change in financial contexts)
- KS3 Science (compound measures, conversions, scale)