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1st grade math · Unit 8: Shapes, halves, and fourths

Solid shapes

What this lesson shows

Sphere, cube, rectangular prism, cone, and cylinder by faces, edges, and vertices.

The worked example

The lesson works this one step by step: cube (question 1). Then your kid tries one like it on paper.

The steps

  1. Flat faces
  2. Edges where faces meet
  3. Vertices are corners

Helping at home

Hold real objects: a ball, a box, a can, a party hat. Count the flat faces, find the edges, and feel for corners.

If your kid gets stuck

Look for flat faces and corners.

Watch it with Lux

With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.

See how Lux works

Standards

  • Common Core 1.G.A.1
    Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.
Matches a standard in all 50 states and DCSee each state's code

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