I blogged about 100's Activities Tuesday back in my Kindergarten Math Centers series, but I wanted to give you a closer look at what activities have worked so well in my classroom.
I start right away in the first weeks of school by making counting to 100 a huge part of our routine. There are two counting to 100 videos that they love and we watch these every day, during snack and the opening of math.
We start the first month of our 100's Chart Book the first weeks of school!
I keep all of their previous charts filed together. This allows me to pull them out at these moments and show each student at all the progress they have really made so far!
I do have a few kids who will try to "cheat" and go back and add numbers in. I remind them that this book shows growth and they should be proud with how far they have come. I have also been known to hide the pens and pencils at this time. ;)
dry erase boards I got on Oriental Trading.
Eventually it gets too easy, so we start skip counting by 2's, 5's and 10's.
After our counting warm-up, we practice building parts of a 100's chart. We start with 1-25 for the first month or two. Everyone gets 1 or 2 cards and has to watch for their turn to "build" it into the correct place in the hundreds chart.
I make a point not to mention anything about the different colored cards. I like to let them discover all the hidden patterns on their own!
We move onto 1-50 by the late fall. In the winter we work on 1-75 and eventually they are ready for 1-100!
Then, I spread these numbers all over the floor of the classroom, in a mixed up order of course!
I use choose one student at a time to find a number. In the beginning we start small, with just 0-10. But as they advance, we make it harder.
Last up is one of my favorites. For 100th day this year, I purchased these star floor clings from Oriental Trading.
As they entered, they had to hop and count their way to 100! We keep these up for about 2 months, to reinforce counting by 10's, and by the time they were worn out, everyone had mastered this skill!
What are some activities you use to build number sense? Let me know in the comments!