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

Relating addition and subtraction and playing the game BUMP; counting down.

Milton Bradley Company Description From the 1950s, particularly after the launch of the Sputnik satellite in 1958, American mathematicians and mathematics educators introduced a variety of reforms in ...

Under the common core, there are many ways to do subtraction—none of which involve borrowing and carrying.

Now that you've learned to do basic math in Excel, your calculations will never slow you down again. With addition, subtraction, multiplication, and division at your fingertips, Excel can become ...

Researchers from 4 projects with a problem-solving approach to teaching and learning multidigit number concepts and operations describe (a) a common framework of conceptual structures children ...

This study examined Korean second and third graders' understanding of multidigit addition and subtraction and particularly their ability to explain the trading required when a column sum of the ...

One of the most hotly contested teaching practices concerns a single minute of math class. Should teachers pull out their stopwatches and administer one-page worksheets in addition, subtraction, ...