Roll Over

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Purpose

This is a Level 2 and Level 3 Geometry activity from the Figure It Out Series.
A PDF of the student activity is included.

Achievement Objectives
GM2-4: Identify and describe the plane shapes found in objects.
GM3-4: Represent objects with drawings and models.
Student Activity

Click on the image to enlarge it. Click again to close. Download PDF (178 KB)

Specific Learning Outcomes

identify face shapes on a threee dimensional shape

make a net for a cube.

Required Resource Materials
A small cardboard box

Heavy paper

FIO, Level 2-3, Geometry, Roll Over, page 9

Scissors

Tape

Play dough or clay

Activity

Activity One


Sian’s method is a straightforward way of finding the net (flat pattern) from which a simple solid can be built. Students will need to ensure that every face is accounted for when rolling. Students may be intrigued that many different nets can be generated for the same solid, depending on the order in which the faces are traced.

For example, a rectangular prism can be made with these nets:

rectangularprism.

Students will notice that the box they open has tabs that are generally used to glue the net together. Packaging companies try to have the least possible number of tabs to keep their costs low. Conventionally, these tabs are located on every second side of the net, as shown in the diagram below:

tabs.


Activity Two

The house in this activity has two pentagonal faces and five rectangular faces. Its net is shown below:

housenet,

Answers to Activities

Activity One

1. Sian’s method does work.
2. Teacher or classmate to check
Activity Two
The faces of the house are rectangles and pentagons.

Attachments
RollOver.pdf177.96 KB
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Level Two
Level Three