Desmos teacher activities are amazing!  You can find them all at teacher.desmos.com (not Desmos.com).  And now, you can even create your own!  I just made my first Desmos Activity last week on systems of equations.  It was incredibly easy to make!

Overlay – See all student work at once.

I teach Algebra 2 students so many of them have already worked on solving systems of equations in Algebra 1.  However, since it was long ago, it is also far away in their brains.  I wanted to let them work through a review without having to directly teach the concept from scratch.  I also didn’t want to reteach parts of the concept they already knew. Desmos activities let you do this beautifully.

Since you can see their work on your computer in real time, you can see if the whole class needs some review on a topic or if you just need to go and visit a few students.  I project the overlays, and students love to see all of their work together.  Another neat feature when you add a “Question Page” is that students can see previous student answers AFTER they type their answer in.

I also want to thank Sam and his new Better Questions Blog because that is where I got the first question of the Desmos activity I created.  It was a wonderful way to have students think about systems of equations!