Students learn how to simplify and use equivalent ratios to calculate proportionate amounts. They use this knowledge to share an amount using a ratio.
This unit takes place in Year 9 Term 2 and leads on to Indices and Standard Form.
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Year 13 Further Mathematics: Statistics 1: Geometric and Negative Binomial Distributions
Scheme of Work: A-Level Applied Mathematics: Statistics 2: Conditional Probability
Dewi Williams says:
You’re right about common misconceptions between ratios and fractions – pupils will often confuse the ratio 2 : 3 with the fraction 2/3.
However, I also think that there is a lot of value in pointing out the similarities between ratios and fractions. Equivalent ratios is conceptually very similar to equivalent fractions, and it is worth pointing out those similarities.
Thanks for sharing!
mrmath_admin says:
Hi Dewi
Thanks for the comment. I completely agree about the need to understand a ratio as a proportion. These questions are becoming much more common nowadays in exam papers. Students continue to find them difficult.
It is also common to see ratio and proportion problems linked with the lowest common multiple.
Thanks again
Jonathan