Everyone will love interacting with this math center because it makes learning fun with Zebras. This 28 page PDF math unit is Common Core State Standards based on two standards: Knowing numbers up to 120 and understanding greater than, less than and equal to. There is a Common Core State Standards poster included for your convenience when the unit is being taught to have posted in your classroom. Easy to understand instructions and a corresponding recording sheet come with this packet as well. If you have any questions please contact me.