Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

When you estimate a number you decide approximately, or roughly, how big that number is. To estimate accurately, you need to have a good understanding of the value and order of numbers. A number line ...

Students go over using number lines to solve the four equations in a fact family. In this lesson, students go over using number lines to solve the four equations in a fact family. Julia uses charts, ...

The pirates are bored, so they count the number of people in line using ordinal numbers. The pirates are bored, so they count the number of people in line using ordinal numbers. Meanwhile, Peg, Cat, ...