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Tuesday, May 31, 2011

Number Bonds

Next year I am going to focus greater attention on NUMBER BONDS with my second graders. Number bonds are mental pictures of the relationship between a number and the parts that combine to make it.

The concept of number bonds is very basic, an important foundation for understanding how numbers work. A whole thing is made up of parts. If you know the parts, you can put them together (add) to find the whole. If you know the whole and one of the parts, you can take away the part you know (subtract) to find the other part.

Number bonds let children see the inverse relationship between addition and subtraction.


Jennifer said...

I have never heard the term "number bonds" but I like it! This looks great!
Rowdy in First Grade

Unknown said...

is this going on tpt? or is there a download link on the post that I'm missing? I use Everyday Math & we call these Fact Triangles... I'd love to add these to my math goodies I'm making up for next school year!