NY Next Generation Math NY-K.G.3

MathKindergartenIdentify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres).

The Standard

Understand the difference between two-dimensional (lying in a plane, "flat") and three-dimensional ("solid") shapes.

New York State Next Generation Mathematics Learning Standards

Teacher's field guide

What Students Need to Do: Students distinguish flat, two-dimensional shapes from solid, three-dimensional shapes. They use the words flat and solid to describe the difference.
What Mastery Looks Like: A student sorts circles, squares, and triangles as flat shapes and spheres, cubes, and cones as solid shapes. The student explains that flat shapes lie in a plane while solid shapes take up space.
Common Misconceptions: Students may call a circle and a sphere the same shape or classify a picture of a cube as flat because the paper is flat. They may also sort by size instead of dimension.
How to Assess It: Give the student shape cards and solid blocks to sort into flat and solid groups. Ask for one sentence explaining the difference between the groups.

Lesson moves

Handle paper shapes and solid blocks, sort them into two groups, and label the groups flat and solid.
Ask students how a circle and a sphere are alike and how being flat or solid makes them different.
Play flat-or-solid relay by drawing an object card, naming its shape, and placing it in the correct group.
Sort classroom objects and their outline tracings, comparing each solid object with the flat shape it leaves.

Free download

$Preview of the NY-K.G.3 printable worksheet$

A ready-to-print activity worksheet aligned to NY-K.G.3, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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