Description:
Partition circles and rectangles into two and four equal shares,
describe the shares using the words halves, fourths, and quarters, and
use the phrases half of, fourth of, and quarter of. Describe the whole
as two of, or four of the shares. Understand for these examples that
decomposing into more equal shares creates smaller shares.

Adaptive Learning Progression:
Starts with vocabulary, then moves to equivalence, then comparison.