Ratios and Proportions

This presentation is about ratios and proportions. A way to write a ratio is say there are 80 birds on a lake, 37 were swans and 43 were ducks. What is the ratio of the swans to ducks... Tell me the answer in the comment. 

Ratio Practice

This maths presentation is about ratios. Miss Clark is getting us used to ratios and how they work. I've learnt to look at the whole question and learnt that I have to look at what's around me and find new ways of solving the problem.