This is BRILLIANT. Draw a number line with sharpie on a ziploc slider bag and use the slider as the tool to add or subtract two numbers. Grade Class, Schools Math, Sliders Bags, Math Tools, Numbers Line, Number Line, Ziploc Sliders, Bags Numbers, First Grade
Also on these boards
Mrs. T's First Grade Class: My latest greatest math tool find. Draw a number line with sharpie on a ziploc slider bag and use the slider as the tool to add or subtract two numbers. I just filled the bags with addition and subtration cards. I put a piece of white paper in the bag also because it made the numbers a little easier to see.
Addition and Subtraction Sliders! Great Visual for students who are struggling with subtraction.