Use various models such as number lines, pictures, and base-ten blocks to illustrate addition and subtraction. 0206.2.6 Links verified on 11/28/2009
- Base 10 Blocks - Exploring whole decimal numbers with blocks
- Decimal Number Line - Identify and estimate decimal fractions on a number line. Move the pointer along the line, find a number between two others by looking at the next decimal place. Click on “Use the decimal number lines tool” at the bottom of the page.
- Estimate numbers on a number line - after students make their estimate you reveal the answer and display a new problem.
- Worksheet Generator - Print your own number line worksheets, you decide on the starting and ending numbers and the increment.