Tech Weigh In: 3 act task in vectors class

Today we did a 3 act task in grade 12. It’s one I have done in grade 10 before, but this time I introduced it as a way to review elimination, and to introduce matrices as a way to solve a system of equations.

Here’s act 1: to set the scene

There are 3 parts to act 2

Each scenario gives enough to build an equation. Groups tended to do elimination at first, and then substitution to follow, or substitution at each step.

We need to work on our elimination skills so we can use matrices and understand how to reduce them. We’ll keep working on that tomorrow.

At the end of the lesson we looked at act 3 to check our answers to see if we were close.