One number, three pictures

Most fraction teaching leans almost entirely on the circle, the pizza, and that quietly reinforces whole-number bias because a pizza always looks like part of one thing. Fraction magnitude lives in the number, not in any one picture. Kids build real understanding when they meet the same fraction across area, length, and set models and recognize it as the same amount every time. This tool shows all three at once, three-fourths as a shaded area, as a point and length on a number line, and as three of four objects in a set, and asks what's the same about them. Fractions past one whole matter here too: a set model makes "five-fourths" concrete as five shaded objects where every four make a whole, breaking the pizza's one-whole ceiling. Flash one representation and have the class conjure the others, or show all three and compare.