## Monday, September 5, 2016

### #Made4Math Linear or NonLinear ... now a Desmos Card Sort

I've written about card sorts in the past, and specifically highlighted the sort on Linear or NonLinear Functions.  (Post 1, Post 2, Post 3)

Recently +Desmos asked if they could create a digital card sort using this set of functions.  It's done and available on Desmos Activity Builder.  Get the link HERE.  Thank you, +Desmos

This card sort fits well in Grade 8, 9, and 10.  In grade 8, you can use it to establish the concept of constant rate of change.  In grade 9, the sort could be used as part of a study of the attributes of linear and quadratic functions.  Then in grade 10, it could be used as a review activity before introducing rational functions.  Here is the link to the paper sort.

Considerations as you plan to use this sort:

1)  Grouping: I've found that card sorts work best when students work as partners.  I love listening in on their conversations.

2) Scaffolding vocabulary:  As students work, encourage them to use good math vocabulary.  Using a word wall or a word list to remind students about the expected terms will help students as they work through the sort.

3) Showing thinking:  Besides sorting the cards, how will students show their thinking?  Will you allow a graphing calculator?  Will students create tables for the equations, to show the rate of change?  How will students justify the placement of cards?