3-D to 2-D
Est. Class Sessions: 2
Students continue to analyze three-dimensional shapes. They trace and describe the faces and then use these properties to compare, sort, and categorize shapes.
Content in this Lesson
- Tracing faces of three-dimensional shapes.
- Relating two-dimensional shapes to three-dimensional shapes.
- Analyzing three-dimensional shapes using their properties [E2].
- Identifying three-dimensional shapes using their properties [E3].
- Identifying congruent faces [E5].
- Justifying conclusions using geometric properties [E7].
Daily Practice and Problems AA–DD
Materials for Students
| Daily Practice and Problems | Lesson | Homework | Assessment | ||
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Student Books |
Student Guide |
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| Student Activity Book |
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Teacher Resources |
Teacher Guide - digital |
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Supplies for Students
Edges, Vertices, and Faces Table page from Lesson 7 (Student Activity Book) Page 449
Supplies for Student Pairs
2 different shapes from the Power Solids® set. See Materials Preparation.
drawing paper
crayons or colored pencils
Supplies for Student Groups
Sets of Faces of 3-D Shapes Cards Masters (Teacher Guide). See Materials Preparation.
rectangular prism from the 3-D Shape collection gathered in Lesson 6
Materials for the Teacher
Display set of Faces of 3-D Shapes Cards Masters (Teacher Guide)
Unit 11 Assessment Record
Math Facts Class Record
Display of the Properties of 3-D Shapes chart from Lesson 6
Display of the Edges, Vertices, and Faces Table from Lesson 7. See Materials Preparation.
chart paper
student-contructed skeleton of a 3-D Shape from Lesson 7
2 sets of Power Solids®
Materials Preparation
Display and Expand Table. In Lesson 7 you made a large display version of some of the content of the Edges, Vertices, and Faces Table in the Student Activity Book. Add chart paper to the right of this chart and add three more columns. See Figure 1 below.
Divide Power Solids®. Remove the sphere and hemisphere from the two sets of Power Solids®. Divide the remaining shapes so that student pairs can work with at least two different shapes. Plan to distribute each shape to at least two student pairs for comparison.
Gather and Display Rectangular Prisms. In Lesson 6 students collected everyday objects representing 3-D shapes. Organize the rectangular prisms (e.g., tissue box and cereal box) to use as models in this lesson. Be sure the collection includes some cubes. Display this collection of rectangular prisms for all students to see. Each group will need one rectangular prism in Part 2.
Prepare Sorting Cards for a Learning Center. Copy the Faces of 3-D Shapes Cards Masters on heavier paper or cardstock to make sets of cards for each student group. Cut apart the cards and store each set in an envelope or with a rubber band. Place these cards and a set of Power Solids® in a learning center for students to play Guess My Shape. This can provide targeted practice with analyzing and describing 3-D shapes.
Prepare the Mystery Sort Game for a Learning Center. Prepare a few copies of the Mystery Sort: Faces Master for targeted practice. Cut apart the properties and the “Yes” and “No” cards and place them in an envelope along with a copy of the directions, a set of the prepared Faces of 3-D Shapes Cards Masters, or other representation of 3-D shapes.
Assessment in this Lesson
| Assessment | Expectation Assessed | Math Practices Expectation Assessed |
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Observe |
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Analyze Faces of 3-D Shapes |
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DPP Item CC |
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