The Order of Operations

By | 16th September 2022

Get the PowerPoint here

Everyone hates the term BIDMAS, right?

Lots of reasons, but the left to right nature of multiplication and division (and addition and subtraction) must be the most important reason.

This week’s lesson is nothing too fancy. An example problem pair, which is way harder than the exercise.

I’ve been mulling this for a while but I just haven’t found a nicer way of doing this. Making the EPP too easy results in students not being able to do the harder questions, and splitting it up into multiple EPPs is just tedious. Maybe I should make the exercise harder, but keeping it simple at the beginning builds confidence nicely.

We move onto examples with a fraction.

These are important, because there’s an implied bracket in there. Students should not have to infer things. We should demonstrate things to them explicitly.

Then there’s an exercise on putting brackets in to make something true, which I always like doing.

As an addendum, I want to publish a resource every single Friday this academic year. We’ll see how that goes.

Happy Friday

Rich