Summary:
This activity helps students relate cubes, cylinders, cones, and rectangular prisms to the two-dimensional shapes (nets) from which they were created.

Main Curriculum Tie:
Mathematics - 4th Grade
Standard 3 Objective 3
Visualize and identify geometric shapes after applying transformations.

Materials:

• A variety of commercial containers in the shape of cones, cubes, rectangular prisms, cylinders
• Geo-solids (e.g., cubes, cones, rectangular prisms, cylinders)

Additional Resources

Geo-blocks Job Cards (Creative Publication)
Jacket constructions grades 4-8 (Creative Publications)

Background For Teachers:
Nets are the two-dimensional shape that, when folded, would cover a three-dimensional solid.

Intended Learning Outcomes:
2. Become mathematical problem solvers.
3. Reason mathematically.

Instructional Procedures:
Invitation to Learn
If we cut these containers at the seams what will they look like?

Instructional Procedures
For each cube, cone, rectangular prism, and cylinder, do the following:

1. Take apart each box or container at the seams.
2. Examine the two dimensional shape from which it came.
3. Discuss how the net was made and the two-dimensional shapes that made it.
4. Make a net that will fit the solid.
5. Allow students to work with geo-solids (blocks) and make the net that would fit it.

Extensions:
Possible Extensions/Adaptations/Integration:
Find solids in the world. Take a geometry hike and discover where and how solids are used in the building world.

Homework & Family Connections
Have students show parents how to make nets listed in the objective.

Attachments

• geometry_hike.pdf
  

Assessment Plan:
Given any solid listed in the core, students should be able to make a net to fit. After the net is drawn, have students cut out, fold, and check it for fit.

Author:
Utah LessonPlans

Created Date :
Aug 29 2003 09:03 AM