Mathematics (2019) Grade(s): 7 - Grade 7 Accelerated

MA19.7A.35

Describe the two-dimensional figures created by slicing three-dimensional figures into plane sections. [Grade 7, 19]

Unpacked Content

Knowledge

Students know:
  • the difference between a two-dimensional and three-dimensional figure.
  • The names and properties of two-dimensional shapes.
  • The names and properties of three-dimensional solids.

Skills

Students are able to:
  • discover two-dimensional shapes from slicing three-dimensional figures. For example, students might slice a clay rectangular prism from different perspectives to see what two-dimensional shapes occur from each slice.

Understanding

Students understand that:
  • slices the prism from different planes may provide a different two-dimensional shape.
  • There are specific two-dimensional shapes result from slicing a three-dimensional figure.

Vocabulary

  • Two-dimensional figures
  • Three-dimensional solids
  • plane sections
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