PPT lesson summary · Foundation PPT · CIE Core

Ratio and Proportion PPT lesson summary

Ratio and Proportion PPT lesson — Foundation (CIE Core). These slides walk a lower-secondary class through the key ideas with diagrams and worked examples on screen. This page summarises the teaching points for search and revision; download the PowerPoint for the full lesson, and use the companion worksheet and answers PDFs for independent practice.

Download Ratio and Proportion PowerPoint Open Learning Sheet — Ratio and Proportion Download Ratio and Proportion answers PDF

Files: foundation-slides-01M65KZY5BGXR3D03G47QQXMRH.pptx · foundation-7 Ratio and Proportion handout.pdf · foundation-7 Ratio and Proportion handout answers.pdf · free public downloads · diagrams on the slides

Key learning points

Simplify ratios by dividing by the HCF.
Share $N$ in ratio $a:b$ : parts $a+b$ , one part $N/(a+b)$ .
Direct proportion: $y=kx$ ; inverse: $y=k/x$ .

Worked example 1 — Sharing

Share $£60$ in the ratio $2:3$ .

Working

24:36

5 equal parts of $£12$ .

Worked example 2 — Simplify ratio

Simplify $18:24$ .

Working

3:4

Divide by HCF 6.

Worked example 3 — Unitary method

4 pens cost $£6$ . Cost of 7?

Working

10.5

Find one, then multiply.

Full slides and practice PDFs

This page is a short, searchable overview of the PPT lesson for revision and search engines. Download the PowerPoint for classroom teaching, then use the companion worksheet and answers when available.

PowerPoint / slides Open Learning Sheet Answers PDF

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