Sorting and graphing center. Kids sort the erasers, and graph the totals in each group. Love it, classification, graphing, and counting all in one easy center. Ohh, they could also make and record a pattern with the erasers!
Kindergarten Yahtzee - This game is so funny to see how excited the kids get. All they have to do is roll 2 dice and cross out the sum. They keep going until they have crossed out all of the numbers. They learn the hard way how hard it is to roll a 2 or a 12! Modify for first...have three dice!
This page has many many many links to great math notebooking ideas! Whether you call them math notebooks or math journals, writing about math and documenting math activities are a great way to cement mathematical.