Lesson 1 - Developing understanding using pie charts
The lesson begins with an explanation about a school canteen worker who wants to ensure that she is buying the right amounts of different types of fruit and vegetables to cater for the pupils in her school, so she surveys them about their favourite types of fruit and veg. After a few minutes of discussion around this, I then explain to pupils that we are going to do the same thing, and find out what our results look like. I did this last week with Year 7, so I'll use their results for illustration purposes.
First of all, I got them to vote for their favourite fruit. It's worth "fiddling" the results a little bit here to give a useful denominator - I added myself into the survey so that we were working with fifteenths rather than fourteenths, as I wanted to get away from the idea that simplifying fractions only involves continual halving. Here are our results: