Here is a part-whole model. Sometimes the model is rotated. It looks different, but it still has two parts and a whole. We can use this model to help us solve problems. We can put 4 things in one of ...

Joanne Tegethoff teaches algebra. Never mind that her students carry Disney princess and Thomas the Tank Engine backpacks and have the alphabet taped on their desks. The 1st -graders in Montgomery ...

Solve word problems using a checklist. Engage in a Number Talk to find "how many." Solve addition and subtraction word problems with a Step-by-Step Visual Model checklist. Understand what the problem ...

This is a preview. Log in through your library . Journal Information Current issues are now on the Chicago Journals website. Read the latest issue.The Elementary School Journal has served researchers, ...

Our pitch calls have yielded remarkable stories, and we want to keep that ball rolling. So it’s time for the next theme. As a refresher: These should be adventures with technology—stories that ...

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 ...

Algebra is all about missing values or numbers. If you have solved a missing box problem, you have already solved an algebra equation. Rather than drawing missing boxes or writing the words “missing ...