The kids are learning about the tens place and ones place in 2 digit numbers. In this activity, the kids are paired up and they each roll 3 times. The number they roll each time is how many snap cubes they hook together. They do this together and build a long train of snap cubes. After the 3rd roll each, they break apart the snap cube train into groups of tens (the cubes left over after this are the ones). Then, they count the tens and ones and write the number.