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2nd grade · Math · Unit 5 of 16

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.

Arizona Academic Standards learning standard: 2.G.A.1 · recognizing and drawing shapes with given attributes

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 Arizona

In the Arizona Academic Standards, this is unit 5 of 16 in 2nd grade Math, after Measuring and before Graphs.

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: Arizona Department of Education

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 one is a rectangle?

    • circle
    • pentagon
    • rectangle

  2. Question 2

    Which shape has no straight sides?

    • hexagon
    • triangle
    • circle

  3. Question 3

    How many corners (vertices) does this shape have?

    • 7
    • 5
    • 4

  4. Question 4

    Which one is a hexagon?

    • triangle
    • hexagon
    • square

  5. Question 5

    How many sides does this shape have?

    • 4
    • 7
    • 5

  6. Question 6

    Which 3D shape has no flat faces at all?

    • cube
    • cylinder
    • sphere

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