Subscribe

2nd grade · Math · Unit 5 of 14

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.

Minnesota K-12 Academic Standards benchmark: 2.2.4.1 · sorting shapes by their number of sides, faces and vertices

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 Minnesota

In the Minnesota K-12 Academic Standards, this is unit 5 of 14 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: Minnesota Department of Education (MDE)

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

    How many sides does this shape have?

    • 3
    • 5
    • 4

  2. Question 2

    Which 3D shape has 6 square faces that are all the same?

    • cone
    • cube
    • cylinder

  3. Question 3

    Which shape has no straight sides?

    • hexagon
    • circle
    • triangle

  4. Question 4

    Which one is a triangle?

    • circle
    • triangle
    • pentagon

  5. Question 5

    Which 3D shape has no flat faces at all?

    • cylinder
    • sphere
    • cube

  6. Question 6

    How many flat faces does a cube have?

    • 6
    • 7
    • 9

More 2nd grade