Addition and subtraction
Adding and subtracting, from making ten to regrouping.
Strategies
Strategy · Kindergarten, 1st grade, 2nd gradeWhat is a number bond?
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…
Strategy · 1st grade, 2nd grade, 3rd gradeWhat is an open number line?
An open number line is a blank line your kid draws to add or subtract by making "jumps". Instead of stacking numbers, they hop from one number to the next in…
