# Ratio

## Activities

Ratio

A self marking exercise on using ratio notation, reducing a ratio to its simplest form and dividing a given quantity into a number of parts in proportion to a given ratio.

Double, Double, Halve and Treble

Questions about scaling up the ingredients in the correct proportion for the witch's brew at Hallowe'en.

Ratios vs Fractions

Relate the language of ratios and the associated calculations to the arithmetic of fractions.

Scale Drawings

Measure line segments and angles in geometric figures, including interpreting scale drawings.

Algebra In Action

Real life problems adapted from an old Mathematics textbook which can be solved using algebra.

Recipe Ratios

Learn the mathematics required to adapt recipes to serve a different number of people.

Pattern Clues

An interactive activity challenging you to reproduce a pattern of coloured squares according to given clues.

Unitary Method

Ten questions which can be solved using the unitary method.

Unit Pricing

Calculate the unit cost of items to earn jigsaw pieces that make a joke.

Map Scales

Test your understanding of map scales expressed as ratios with this self marking quiz.

Ratio Clues

Arrange the ratio clues in the clouds in a logical order to work out the values of the twelve letters.

Similar Shapes

Questions about the scale factors of lengths, areas and volumes of similar shapes.

Direct and Inverse Proportion

A self-marking exercise in solving direct and inverse variation problems.

## Videos

This is the main Transum help video on Ratio.

Ratio Video

Learn to work with ratios including dividing a quantity in a given ratio.

Ratios And Rates

A lively explanation from Math Antics

Map Scales Video

Refresh your understanding of map scales expressed as ratios.

Scale Factors Video

The scale factor, area factor and volume factor of similar shapes are quite different.

Direct and Inverse Proportion Song

Examples showing how to solve direct and inverse proportion questions in the form of a song!

## Visual Aids

Dividing in a Ratio

A slide presentation showing how to divide a quantity in a given ratio

## Starters

Aunty Dotty
A real life situation requiring the division an amount of money according to a given ratio.

Missing Square Puzzle
The missing square puzzle is an optical illusion used to help students reason about geometrical figures.

Plant More Trees
If six girls can plant 90 trees in a day. How many trees can ten girls plant in a day? The unitary method.

What are they?
A starter about sums, products, differences, ratios, square and prime numbers.

22 items are currently in this category.

Teachers might find the complete Ratio Topic List useful.

A ratio is a relationship between two numbers of the same kind. In layman's terms a ratio represents, simply, for every amount of one thing, how much there is of another thing.

This topic presents a number if different ways pupils can represent ratios and apply their meaning to problem solving situations.

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