Break numbers up to 10 into two parts in more than one way (5 = 2 + 3 and 5 = 4 + 1).
A number bond is a simple picture that shows how a number breaks into two parts. The whole goes in the top circle, and the two parts go in the circles below…
A short video (from LampoFilm on YouTube) showing how number bonds are used in kindergarten through 2nd grade, with examples you can try at home.