Grade 2 · Geometry

CCSS.MATH.CONTENT.2.G.A.3

Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.

Read this standard on the official Common Core site

Lessons that teach this standard

• Equal Shares: Halves, Thirds and Fourths

  Cut circles and rectangles into two, three or four equal shares, name them halves, thirds and fourths, and see why more shares means smaller shares. Grades 1–2.