1. Let's start by understanding what a number bond is. 2. A number bond is a simple way to show how two or more numbers combine to make another number. 3. For example, if you have the number 10, you can make a number bond by splitting it into 7 and 3 because 7 + 3 = 10. 4. The formula or rule is: $$a + b = c$$ where $a$ and $b$ are parts, and $c$ is the whole. 5. Number bonds help us see the relationship between parts and the whole, which is very useful in addition and subtraction. 6. To make a number bond, pick a whole number and find two or more numbers that add up to it. 7. For example, for the number 8, possible number bonds are 5 and 3, or 6 and 2, because $5 + 3 = 8$ and $6 + 2 = 8$. 8. This helps build a strong foundation for understanding addition and subtraction in math.