Hello math geeks! Welcome back!
I’ve been an advocate for using dot images and visuals as problems for number talks in the elementary classroom. (You can find a great bank of visuals here.) I’ve also been an advocate for using Desmos as an instructional tool for letting student thinking drive the classroom discourse.
Traditionally, Desmos has been used mostly by middle and secondary teachers as a teaching tool. But recently they’ve introduced Card Sort as a way to make Desmos a useful instructional tool for elementary teachers and students as well. I wrote a bit more about this on my post here. Annie Forest made some brilliant screencast videos about how to use Desmos here. Check them out! She also has a bank of activities (small but growing!) here.
Here’s a link to my card sort activity.