Munching Math Mats are easy to use, fun, and kids love them. The mats allow you to address CCSS in the area of numbers sense and geometry.
These very simple mats can be laminated or placed in page protectors for use over and over again. As the classroom teacher you can incorporate munching sweet or healthy snacks (cereal/crackers) as part of the math center. Kids love it! If you are in a pinch and don't have any food on hand, use manipulatives you already have!