• Curriculum

## Ratio and proportion

Unit 9 – 2 weeks

The PowerPoint file contains slides you can use in the classroom to support each of the learning outcomes for this unit, listed below.

The slides are comprehensively linked to associated pedagogical guidance in the NCETM Primary Mastery Professional Development materials. There are also links to the ready-to-progress criteria detailed in the DfE Primary Mathematics Guidance 2020.

### Learning outcomes

 1 Pupils describe the relationship between two factors (in a ratio context) 2 Pupils explain how to use multiplication and division to calculate unknown values (two variables) 3 Pupils explain how to use multiplication and division to calculate unknown values (three variables) 4 Pupils explain how to use a ratio grid to calculate unknown values 5 Pupils explain how to use multiplication to solve correspondence problems 6 Pupils explain how and why scaling is used to make and interpret maps 7 Pupils will use their knowledge of multiplication and division to solve scaling problems in a range of contexts 8 Pupils identify and describe the relationship between two shapes using scale factors (squares) 9 Pupils identify and describe the relationship between two shapes using scale factors and ratios (regular polygons) 10 Pupils identify and describe the relationship between two shapes using scale factors and ratios (irregular polygons)

• Primary
• KS2
• Year 6