Age 16 to 18 Challenge Level:
Why do this
This is a self-checking and enjoyable way to learn and to
understand the proof of the formula
Not everyone has their maths lessons in a computer room! This
exercise can be set for homework if the learners have access to
computers at school to do their homework, or at home.
If you want to use this actvity without a computer how about
clicking on 'Printable Page' and printing this for yourself. You
can then cut out the pieces and rearrange the bits of paper. Of
course teachers can photo-copy this for a class.
Can you explain all the steps in the proof?