Tara introduced me to the free app: Math Slide and my students love it! They love it for several reasons but the number one reason has to be that they get to play against each other. Even in the free app (there are a couple of paid versions as well) up to 4 players can play at once which is awesome!
Students race against each other practicing a variety of skills. There are several versions of this game including: addition/subtraction, place value, tens/ones, hundreds/tens/ones, multiplication/division, ect.
The screenshots from this post come from the addition/subtraction game. If you want to see other versions of this application click the words above and then once you are in your new window click "view more by this developer" to see the complete list.
As a teacher, I really like this application because it helps students practice their fact fluency (as they race against their peers) and kids are seeing addition/subtraction number sentences in a variety of ways (fingers, dice, ten frames, ect.) which helps with their number sense.
A big thank you to Holly over at Fourth Grade Flipper for hosting this wonderful linky! Make sure to hop on over to Holly's blog to see more things teachers have tried in their classrooms!