I use these workmats with my kindergarteners during math RTI time. The mats help students visualize how two parts, yellow and blue, come together to make one whole, green. Students place one of the two given amounts of manipulatives in each of the "part" circles, Then, students can move their manipulatives into the whole circle (green), or place a 1:1 ratio of manipulatives into the whole circle. The workmat also makes word problems more meaningful since students can visualize the addition or subtraction described in the word problem. I hope you are able to find some way of using this mat in your classroom!