Each day, as part of our math Number Corner, we keep track of how many days we have been in school by writing and representing the number. This means we are very aware of the 100th day of school and excitement for the day usually starts to build around day 90, as we just have one more ten frame to fill.

 Our 100th day was last Tuesday, February 8th and we engaged in a variety of activities to mark the milestone. These included a partner game to collect 100 cubes, searching the room for 100 numbered tiles and matching them to their corresponding number on a 100's chart, stringing 100 beads, looking for hidden pictures with objects arranged in rows of 10 and determining how many of each object there were, and reading 100 words. I'm certain that the highlight for everyone was the snack with 100 little morsels, which we actually enjoyed on the 101st day, Wednesday, as a picnic to take advantage of the glorious sunshine and warm temperatures! 

While celebrating the 100th day is mostly about recognizing a milestone and having fun, I find that emphasis on 100 for a day or two can also deepen children's sense of our number system and how numbers to 100 are composed and written as groups of 10 and additional ones.