As an introduction to linear direct variation, I put together a quick problem-based learning task that was proportional for my combined academic & applied class:

**Scenario**:

What do you notice?

I had to use the Pear Deck dashboard to hide some responses that involved calculating the price per calculator as this was part of solving the later problem. I suppose I could have left them up, but I wanted to leave the calculating part until later when students were in their groups.

What do you wonder?

How much would it cost to buy a class set of 25 calculators?

Best estimate: ________$

**Solve**:

You can find the Pear Deck slideshow in this folder. Also in the folder is a follow up slideshow exploring the concept of Direct Variation.

– Laura Wheeler (Teacher @ Ridgemont High School, OCDSB; Ottawa, ON)