Equivalent Ratios

By the end of this unit, students will:

1. understand that ratio shows the relationship between two values and can describe how one relates to the other;
2. understand the colon notation as the ratio symbol;
3. find equivalent ratios by dividing or multiplying by the same number.

Curriculum Alignment: Key Stage 3: Ratio, proportion and rates of change

• use ratio notation, including reduction to simplest form.
• divide a given quantity into 2 parts in a given part:part or part:whole ratio; express the division of a quantity into 2 parts as a ratio.
• understand that a multiplicative relationship between 2 quantities can be expressed as a ratio or a fraction.
• relate the language of ratios and the associated calculations to the arithmetic of fractions and to linear functions.