Your child can build an understanding of addition, subtraction, and the other math concepts they are learning in first grade by playing with everyday objects. Use items that your child enjoys ...

Karen C. Fuson, Diane J. Briars, Using a Base-Ten Blocks Learning/Teaching Approach for First- and Second-Grade Place-Value and Multidigit Addition and Subtraction, Journal for Research in Mathematics ...

Students put all their addition and subtraction skills together to solve equations.

Achieving fluency with basic subtraction and add-with-8 or -9 combinations is difficult for primary grade children. A 9-month training experiment entailed evaluating the efficacy of software designed ...