Students need to experience numbers through concrete materials and visual representations before expecting abstract representations. Number bonds help students to explore the part-part-whole relationship of numbers and are an important foundation for understanding how numbers work. A number bond is a picture of the inverse relationship between addition and subtraction. 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.
I have created three number bond products for Teachers Pay Teachers that I am featuring and they will be on sale from March 2-5. Check them out here.
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