Education Week · 3dFractions Still Stump Students. Here’s How to Help
Another common struggle: the parts-of-a-whole problem. Fractions are introduced through the “pizza model,” but students’ thinking often gets stuck there. Taking two slices from an eight-slice pizza is easy to comprehend, but taking two slices out of two different pizzas—one with six slices and another with seven—is difficult to grasp.