100th Day of School

Today was the 100th day of 1st grade and there were special activities happening all day!  This morning classes rotated to all the 1st grade teachers.  In my class we were trying to figure out which container had exactly 100 objects inside.  Students worked with partners to put objects into groups and skip count to find the totals.  They also compared their number to 100 and figured out how many more they would have needed or how many extras they had.  Look at all the different counting strategies and arrangements used:

This afternoon we worked on a 100 book challenge.  Our class tried to read 100 books in one afternoon!  We didn't reach 100 books, but that's because we did a lot of partner reading and enjoyed lots of great stories with friends.  Here are some happy readers with their books: