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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 PowerPointOpen Learning Sheet — Ratio and ProportionDownload 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 NN in ratio a:ba:b: parts a+ba+b, one part N/(a+b)N/(a+b).
  • Direct proportion: y=kxy=kx; inverse: y=k/xy=k/x.

Worked example 1 — Sharing

Share £60£60 in the ratio 2:32:3.

Working

24:3624:36

5 equal parts of £12£12.

Worked example 2 — Simplify ratio

Simplify 18:2418:24.

Working

3:43:4

Divide by HCF 6.

Worked example 3 — Unitary method

4 pens cost £6£6. Cost of 7?

Working

10.510.5

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 / slidesOpen Learning SheetAnswers PDF
WorksheetsTopic summariesTopic videos