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Level Two > Geometry and Measurement

Sea Symmetry

Keywords:
Purpose: 

This is a level 2 geometry activity from the Figure It Out theme series.

Achievement Objectives:

Achievement Objective: Predict and communicate the results of translations, reflections, and rotations on plane shapes.

Specific Learning Outcomes: 

complete geometric patterns showing reflection

Required Resource Materials: 
FIO, Level 2-3, Theme: Under the Sea, Sea Symmetry, page 4
A mirror
Tracing paper
Activity: 

Activity One

In this activity, students complete shapes that have reflection symmetry. Students can complete the drawings in two ways:
• Use a mirror along the line of symmetry and draw the image that they see in the mirror.
• Draw one half of the shape, fold it along the line of symmetry, and trace the other half against a window, if necessary.
Key points about reflection are:
• Corresponding distances from the line of symmetry must be equal.

starfish.
• Orientation is opposite.

sea creature.
Encourage students to make sea creatures with rotational symmetry (see page 16 of Geometry, level 2–3, in the Figure It Out series).

Answers to Activities

Activity One
Teacher to check
Activity Two
Answers will vary.


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