3.G.A.2: Cut shapes into parts of equal area; each part is a unit fraction of the whole

Partition shapes into parts with equal areas.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 3.

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How ColorMyMath teaches it

Shapes are built, turned, cut and stacked, not just named. A square is an area you lay out yourself; a cube is that square stacked into layers.

Every page is free and open — nothing to install, no account, and it works on a phone or a classroom board. Every number has its own color: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 purple, 7 brown, 8 pink, 9 cyan, and a number is that many colored dots.

More Grade 3 standards in Geometry

• 3.G.A.1Rhombuses, rectangles and squares are quadrilaterals; draw ones that are none of these

ColorMyMath · getridoftheteacher.com · every number has its own color, and a number is that many colored dots. Matching a game to a standard is a judgement call; the official text is at doe.mass.edu.