If you didn't watch the previous video on subtracting left to right, you're missing out. All the old school geezers will teach you right to left subtraction, and it's not wrong, and sometimes it's ...

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 ...

Addition & subtraction strategies to solve two-digit equations using an open number line. In this lesson, students go over using different addition and subtraction strategies to solve two-digit ...

Some of the biggest challenges in teaching math aren’t about the numbers and operations themselves, but students’ attitudes toward them. Getting students to think deeply about problems, persevere ...