Students put all of their addition and subtraction skills together to solve equations. In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia ...

It is a common trend in the sports world for any and all personalities therein to adopt various buzz words and jargon. Words or phrases that are either rooted in obscurity or just tossed out to ...

Match fun story problems with the correct addition or subtraction expression. Join Mrs. Gray for number talk with the Counting Buddy Junior. Then get ready to match fun story problems with the correct ...

Death runs in the family.

In early 15th century Europe, the letters P and M were generally used for addition and subtraction. Why is the plus sign used for addition and the minus sign for subtraction? In early 15th century ...

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

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 ...