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Ratio and Scale: A Model-Making Studio

Select clearly countable jars, model dimensions or mixture parts and write three ratios. Simplify each ratio and explain how a scale model keeps corresponding lengths proportional.

Key stage

Key Stage 3

Subject

Mathematics

Time

~5 min

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Free

Format

Colouring Sheets

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Select clearly countable jars, model dimensions or mixture parts and write three ratios. Simplify each ratio and explain how a scale model keeps corresponding lengths proportional.

Use the parent guidance on page 2. Print on A4 paper at actual size or fit to printable area, then encourage careful colouring and discussion of the learning topic.

Use the guidance and answer key on page 2. Answer or assessment rubric: Answers depend on selected visible groups. Ratios must compare named quantities in a consistent order and simplify by a common factor. A scale drawing/model uses one constant multiplicative scale factor for corresponding lengths; it does not add the same amount to every length.

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