Number Line and Slider

Click here to download the stl file for this tool. [TBP]

My manipulative is a number line including the numbers 1-10. It has a sliding piece that goes on top of it that students can use when adding, subtracting, or even finding the number before or after a given number. When the slider is moved over the number line, it highlights just one number by placing the number in the center of the sliding box.