Flats, Rods & Squares - Model Whole Numbers & Fractions 4-111
Transition from thinking proportionally about just whole numbers, to including fractions, too. If a flat has 16 squares and its total value is 4, what's the value of a rod? A rod is a flat divided into 4 equal parts, so 1 rod = 4÷4 = 1. What's the value of the square? A square is a rod divided into 4 equal parts, so 1 square = 1÷4 = 1/4.
