Anyway, here are the pictures and steps on how to make your own set of "Rekenrek" calculation racks. I would love to hear any suggestions for a cutesy name for these little beaded boards. So please leave me comments!
First, I bought some foam sheets from Michaels, and cut them down to 4" by 6".
|4 pencil dots in the corners, for the chenille stems to pass through.|
Then I cut about 1 1/2" off of the end of black chenille stems. I just poked them through the dots on the end, and bent them over about 2" worth.
|You will need 2 chenille stems per board...|
|Thread the stem through, and bend it down on the back side of the foam board.|
|Thread the beads onto the chenille stems.|
|Poke the stem through the other dot, and bend it down on the back side of the foam.|
Finally, I twisted the two ends of the stems together and wrapped them around, so no ends would stick up.
|Twist them together...and|
|wrap them around each other, so they don't stick up.|
Of course, I had to make them cute, so I added some ocean stickers to go with my beach theme in my classroom.
I can't wait to use these in my class. It is a great idea for adding and subtracting, and for kids to be able to slide the beads and manipulate them as they make groups of five, ten, etc...
|Class set... =)|
Have fun making your own set. Please leave me a comment about a cute name that I could refer to these little "Rekenrek" boards. The more I say the Dutch Mathematician who designed this idea, the more I like how it sounds, and my 2nd graders might actually like calling them by his name. =)