It is called Math Slide. It is free for a limited number of game and 1.99 for unlimited play. It can be played by 1-4 players and has 10 different games.
In game 1 they show place value pieces, money pieces or a number line and students have to figure out what number it represents. If they have that number, they touch it with their finger and slide it into the middle. Many times more than 1 kid will have the number and the first person who gets the correct number into the middle has their number disappear and they are one step closer to winning.
|A look at math slide being played by 4 players|
|Money pieces from game 1 of Math Slide 1000|
|A number line with a missing number, part of math slide game 1|
Game 2 is very different from game 1. The rules are the same but the context completely changes. Now students are presented with a number written in expanded notation and have to slide in the number that is equivalent but written in standard notation. Take a look:
|Math Slide 1000 game 2|
|Another look at Math Slide 1000 game 2|
If you have a tablet and teach in grades 2-4, you might want to check it out. If you download the free version, you get unlimited rounds of game 1 and 2 rounds of games 2-9. My favorite part is that 4 kids can play at once and they stay super engaged the entire time!
One warning: I did have to make a rule early on that each player gets ONE chance to slide a number in per turn. Without this rule some kids were just sliding in random numbers as fast as they could without doing any thinking. If they break this rule, they don't get to play!
If you teach other grades, there are other versions of Math Slide you might want to try out!