3.1.4 Fractions Built from Pieces: Unit Fractions and Stacking Up
Core idea1/4 is one piece, so three pieces is three of those 1/4s, which makes 3/4 — every fraction is built up from unit fractions.
Module goal. Let fractions grow out of the picture of "sharing fairly," understand that a fraction names "part of a whole," and learn to read, write, and place them on the number line.