Relating addition and subtraction and playing the game BUMP; counting down. Relating addition and subtraction and playing the game BUMP; Working with numbers, starting with a number and counting down ...

Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

Grandville — While teacher Emily Gorno settled onto a rug at the front of her classroom with a handful of second-graders for a math lesson, a small group of her other students took out an activity of ...