In lieu of a school having to make technology available for vast numbers of kids it is possible to use personal technology. The apps identified here can be useful in a math course.

Polls would allow personally relevant data collection and could lead to modeling opportunities (not on the runway, models like linear functions).

Plinky would allow a high tech version of an exit slip.

Group Tweet would allow collaboration on a project and provide details for a student who is absent. You could match kids with kids at another school…maybe another country!

I would love to field some input from readers.