As I said before the Math resources are coming! (Run for your LIVES!)
Found on Pinterest (yay!) this site has composed quite a few tools that are online and can be used in a variety of Math units. There is of course the usual calculator, but also 2 hundreds charts, a sticky numbers app, and one where you can see angles. There are a few others but I’ll let you discover those on your own.
The one that stood out for me is the teacher’s toolkit. It has all those things, plus some so teachers can pull them up on the computer or SMARTboard for whole/small group instruction. Enjoy!