The Vim command line text editor includes a powerful copy and paste function. Instead of using your mouse to highlight a certain number of lines and copy them, you use a keyboard shortcut to indicate ...

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 ...

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 ...