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2nd grade · Math · Unit 12 of 19

Shapes

Sides, corners and faces

What your child practices

Describing shapes by their sides, corners (vertices) and faces, and spotting 3D shapes in real life.

Texas Essential Knowledge and Skills (TEKS) teks student expectation: 2.8(A); 2.8(C) · making shapes with a given number of sides and vertices, and sorting polygons

How we explain it

Children can open this short lesson before they practice.

  1. 2D shapes are flat. 3D shapes take up space.
  2. Faces are the flat sides of a 3D shape.
  3. Edges are where faces meet. Vertices are corners.

Example: How many flat faces does a cube have? A cube is like a dice. It has a face on each side: 6. Answer: 6

Shapes in Texas

In the Texas Essential Knowledge and Skills (TEKS), this is unit 12 of 19 in 2nd grade Math, after Dollars & Cents and before Measuring.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Texas Education Agency (TEA)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which shape has exactly 6 sides?

    • square
    • pentagon
    • hexagon

  2. Question 2

    How many corners (vertices) does this shape have?

    • 6
    • 8
    • 4

  3. Question 3

    Which 3D shape has no flat faces at all?

    • sphere
    • cylinder
    • cube

  4. Question 4

    A globe is shaped like a…

    🌍
    • cylinder
    • sphere
    • cone

  5. Question 5

    Which one is a pentagon?

    • hexagon
    • pentagon
    • rectangle

  6. Question 6

    How many sides does this shape have?

    • 5
    • 4
    • 7

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