Mental Math Strategies
Strategies to build math accuracy and fluency
The Evolution of a Number Bond - Math Coach's Corner
Math Coach's Corner: The Evolution of a Number Bond. Understanding number bonds and how to compose and decompose numbers are incredibly powerful number sense skills that can benefit students of all ages. See examples from Kindergarten through 4th grade.
Open Number Line Addition - Math Coach's Corner
Math Coach's Corner: Open Number Line Addition. Doing addition (and subtraction) this way helps students become comfortable with grouping by tens and being more efficient with their strategies. I first saw this in the Do The Math curriculum (Marilyn Burns).