MA19.7.19

Mathematics (2019) Grade(s): 7

MA19.7.19

Describe the two-dimensional figures created by slicing three-dimensional figures into plane sections.

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:
  • slicing he prism from different planes may provide a different two-dimensional shape.
  • There are specific two-dimensional shapes resulting from slicing a three-dimensional figure.

Vocabulary

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

Aligned Learning Resources

Slicing Three-Dimensional Figures and Identifying the Resulting Cross-Sections
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