Mars Bars

This little prompt caused some serious debate in my S3 class. The pupils had only just learned about compounding and were still working things out repeatedly. The motivation of this task was to set up a rationale for using x 1.03^20 instead of laboriously doing 20 different calculations.

The context added some emotional energy to the lesson, while the consideration of the weight is an addition I only considered once they had left the room, but will be sure to add tomorrow.

Credit: @chrismcgrane84

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s