MAFS.K.G.1.3: Identify shapes as two-dimensional (lying in a plane, “flat”) or three-dimensional (“solid”).

Cognitive Complexity Level: 1-Recall

[divider] [/divider] Students are able to… 

  • Tell which shapes are flat.
  • Tell which shapes are solid.

[divider] [/divider] Students are able to…because teachers:

  • Encourage students to identify flat and solid shapes in the world around them.
  • Ask questions to get students to compare and contrast the differences between a solid shape and flat shape.
  • Provide opportunities for students to explore concrete flat and solid shapes.

 [divider] [/divider] Questions to ask students:

  • Ask:  Is the shape shown solid or flat?  How do you know?
    • Sample answer that indicates understanding: It is flat because it doesn’t have height.  It lays flat on the table.

  • Ask:  Is the shape shown solid or flat?  How do you know?
    • Sample answer that indicates understanding:  The shape is solid because it has height and stands up off the table.

  • Ask:  How do the two shapes compare?
    • Sample answer that indicates understanding:  The square is flat and lays on the table.  The cube is a solid shape that has height.  They both are made with squares.

[divider] [/divider] Additional Resources:

Additional in depth content knowledge

[divider] [/divider] Sample Formative Assessment Tasks:

Ask, “What do you notice about the two shapes?  How do they compare?”  A follow up questions could be if needed, “Is the ball a flat shape or solid shape?  How do you know?”

[divider] [/divider] Resources/Tasks to Support Your Child at Home:

Have your child identify flat shapes (2 dimensional) and solid shapes (3 dimensional) at your home.  Have them draw pictures of the different flat shapes and solid shapes they find.