Play Dough Number Mats: These color masters can be used as a math center activity for practicing number concepts such as one-to-one correspondence, using ten frames. You can laminate them or slip them into a clear plastic sleeve/cover for protection from play dough work. When used with play dough, they provide both number sense practice and fine motor skills practice. The mats also double as write-and-wipe number mats when laminated or set in a plastic sleeve, and used with dry erase markers and erasers. These math mats reinforce kindergarten Common Core math standards.