How I Use It
I use this app as an activity to build number sense and place value knowledge. A single iPad can serve up to FOUR students, which makes his useful for teachers with only one or a couple of iPads. The multiplayer version is very intuitive, so it requires very little prep to get the kids going. It also works for individual practice, but the students prefer going head to head with others.
My favorite aspect of the Math Slide series is the variety of representations they use for numbers. The early levels start with very simple fundamentals that still make kids think, and then levels build to an impressive level of complexity. As a first grade teacher, I primarily use the Math Slide Tens and Ones (also called Math Slide 100.) The addition and subtraction is another good one. All four apps in the series are excellent!