With Cuisenaire Rods (see picture) the white rod, the smallest, is one cubic centimeter. (This is the same size as a standard base ten block.) The longest rod is orange. When the children put the rods by length, they make a colorful "staircase". (See picture.)
The children can then assign values to each rod by color based upon the relationship of the other rods.
|Wouldn't your students love to dig into these? Mine do!|
I like to start with sets of ten, since our number system is based on ten. It's good for them to know those combinations of ten!
Since the orange rod has a value of 10, this picture shows 9+1=10. It also shows 1+9=10.
It also shows 10-1=9 as well as 10-9=1.
What fact family do these blocks show? 6+4=10, 4+6=10, 10-6=4, and 10-4=6.
This one shows 6+6=12 and 12-6=6.
The Cuisenaire Rods can also be used for multiple addends or even multiplication. This could be 3+3+3+3=12 or 3x4=12.
When it comes to storage, the containers the rods come in are tricky for the kids to put away. I put my Cuisenaire Rods into a container much easier for little hands.
This activity supports these Common Core Standards:
1.OA.1 and 2.OA1 - Represent and solve problems involving addition and subtraction.
1.OA.2 and 2.OA.2 - Add and subtract within 20.
1.OA.3 - Understand and apply properties of operations and the relationship between addition and subtraction.
I've also found a link for online Cuisenaire Rods!
I hope your students enjoy learning math facts with Cuisenaire Rods as much as mine do!
Click the Super Math Centers button to see lots more Math Center activities at Corkboard Connections!