Formulae rules poster

A set of two posters for the classroom – also useful as handouts.
Formulae (L2)
I asked a group of my learners to come up with a short and snappy set of rules for using formulae. One of the group wrote the rules in the form of a poster, from which I developed this poster.
Covers general rules for using formulae such as order of operations (BIDMAS). Plus a separate page specifically for using a formula to find the area of a circle.