Introducing Number Bonds
District Strategic Goal #1 is:
To continuously improve student growth and achievement.
Mathematicians in 2Z found a new way to look at numbers bonds this week! As part of our new Math in Focus math program, number bonds are introduced as a way to explore the part-part-whole relationships of numbers. To demonstrate this in a concrete way, we counted the number of letters in our names. With partners, we used our individual names as the parts of the number bond and found the whole number by looking at our names next to each other. Together we explored that numbers can increase as we combine them, and can be seen as two or more parts that make a whole. We also had fun seeing who had the longest and shortest names!
A number bond is a mental picture 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 take away the part you know (subtract) to find the other part.
Number bonds let children see the inverse relationship between addition and subtraction. Subtraction is not a totally different thing from addition; they are mirror images. To subtract means to figure out how much more you would have to add to get the whole thing.
Watch the Video below to learn more about number bonds
Submitted by: 2nd Grade Teacher Kelsie Zarko