Math Focus 4
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# Chapter 5 -Symmetry in Snowflakes

## INTRODUCTION

There are two different types of symmetry, line symmetry and rotational symmetry. In this task you will explore both kinds of symmetry. Not only will you see the applications in geometric figures, but you will learn to recognize symmetry in nature. You will apply what you have learned about symmetry to create a symmetrical snowflake.

## THE TASK

Symmi Tree is creating snowflakes, but is not sure that they are symmetrical. She has hired you to explore symmetry and help write instructions to create a perfectly symmetrical snowflake to share with others.

## THE PROCESS

1. Use the website Symmetry – It’s All Around You! to view different types of symmetry. Explore at least 5 links found within this website.
2. Print both of the worksheets below and find the symmetry in the shapes and letters.
Identify Symmetry in Regular Polygons
Identify Symmetry in the Alphabet
3. Create a snowflake to help Symmi Tree. To get some ideas on different designs, use the resources at Paper Snowflakes. As you create your snowflake, write down all the steps you take. As you takes your notes, explain each step and why you are doing it like that. Title your work Steps to Making a Snowflake.
4. To complete your assignment in helping Symmi Tree, staple your snowflake to the procedure steps. Then, using a highlighter, show all of the different lines of symmetry in your snowflake.

## RESOURCES

Websites:

Worksheets:

Materials: pencils, scissors, highlighters, ruler

## ASSESSMENT

 Level 1 Level 2 Level 3 Level 4 Problem Solving Make a Plan I did not have a plan to help me find information to put in my procedure. I had a partial plan to help me find information to put in my procedure. I had an appropriate plan to help me find information to put into my procedure. I had a thorough plan to help me find information to put in my procedure. Application of creating a symmetrical snowflake I made major errors and/or omissions when creating my snowflake and it is not symmetrical. I made several errors when creating my snowflake and it is partly symmetrical. I made only a few minor errors when creating my snowflake and it is mostly symmetrical. I made no errors when creating my snowflake and it is completely symmetrical. Communication of the procedure on how to make a symmetrical snowflake My explanations were incomplete or inaccurate. I used very few math words involving symmetry. I gave partial explanations. I used simple math words involving symmetry. I gave complete, clear and logical explanations. I used appropriate math words, involving symmetry. I gave thorough, complete and insightful explanations. I used a range of math words, involving symmetry.