Activity
Math Is Fun

Math Is Fun: Symmetry

For Students 3rd - 8th
Students learn about symmetry. Topics explored are reflection, rotational, and point symmetry. Examples and definitions are included.
Graphic
University of Cambridge

University of Cambridge: Nrich: A Cartesian Puzzle

For Students 3rd - 8th Standards
This one page website lets you practice plotting points on the coordinate grid. See if you can find the missing coordinates to complete the shapes. When you are finished the solutions are only a click away.
Graphic
University of Cambridge

University of Cambridge: Nrich: Transformation Tease

For Students 3rd - 8th Standards
Follow the directions at this one page website. You will get lots of practice plotting points on the coordinate grid and experience with transformational geometry.
Activity
University of Cambridge

University of Cambridge: Nrich: Tessellating Triangles

For Students 3rd - 8th
The challenge at this one page website, involves tessellation and triangle. Should you accept this challenge, you will find helpful teacher notes and the solution available right at the website.
Unit Plan
Amethyst Galleries

Amethyst Galleries: Isometric System

For Students 9th - 10th
This resource contains information about Isometric symmetry.
Unit Plan
Wolfram Research

Wolfram Math World: Symmetry

For Students 9th - 10th
This site provides a detailed explaination of symmetry and many links to related topics.
Activity
Other

Teach Net: Rotational Symmetry

For Students 9th - 10th
An explanation from Teachers Network of what rotational symmetry is along with some examples that show this.
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: The Art of Oriental Carpets

For Students 9th - 10th
This site from the Math Forum of Drexel University gives an idea of how symmetry and pattern is used in oriental carpets. Links are provided throughout for additional information on related subjects.
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Cone Symmetry

For Students 9th - 10th
This question and answer site examines why a circular cone has an infinite number of lines of symmetry.
Activity
National Council of Teachers of Mathematics

The Math Forum: The Four Basic Symmetries

For Students 9th - 10th Standards
This is a site from the Math Forum that gives visual examples to show the differences between the four different kinds of symmetry. Examples are given along with links to additional information.
Whiteboard
ClassFlow

Class Flow: Exploring Quadratic Functions

For Teachers 9th - 10th Standards
[Free Registration/Login Required] Use this interactive flipchart to allow students to explore quadratic functions in algebra.
Graphic
Other

Univ. Of Arkansas: Symmetry and the Shape of Space

For Students 9th - 10th
This University of Arkansas site applies symmetry to the world of history and artifacts. Includes images.
Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Symmetry in Regular Polygons [Pdf]

For Teachers 2nd - 5th
An activity for students to explore symmetry on different regular polygons.
App
National Gallery of Art

National Gallery of Art: Wallovers

For Students Pre-K - 1st
A wallpaper-designing program that turns your freehand drawing into repetitive patterns. A good introduction to repetition as a design principle and to grid systems.
Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is Symmetry in Math

For Students 2nd - 8th
Defines symmetry, line of symmetry, point symmetry, and gives examples.
Activity
Scholastic

Scholastic: Symmetry Surprise

For Teachers Pre-K - 1st
A fun fingerpaint activity that teaches about the concept of symmetry.
Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: The Center of Mass

For Teachers 7th - 9th
This site from the Illinois Institute of Technology provides a lab activity in which students determine the location of the center of mass of an irregularly shaped object. Observations are related to the balancing point of the object....
Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Center of Gravity Lab

For Teachers 9th - 10th
This Illinois Institute of Technologysite provides a lab activity in which students find the center of gravity of a box which has nonuniform weight distribution. Complete with directions and discussion questions; answers provided.
Handout
Wikimedia

Wikipedia: Plane of Symmetry

For Students 9th - 10th
This site from the free encyclopedia, Wikipedia, provides a basic definition for plane of symmetry. Links are given for additional information on related subjects.
Graphic
Curated OER

Diamond

For Students 9th - 10th
Gives information on the different kinds of symmetry operations, including mirror planes, rotational axes, and rotoinversion axes.
Graphic
Curated OER

Ic Teachers: Line or Reflective Symmetry

For Students 3rd - 8th
This website will provide you with a quick review of line or reflective symmetry. It also has questions and answers to help you understand line/reflective symmetry.
Graphic
Curated OER

Ic Teachers: Line or Reflective Symmetry

For Students 3rd - 8th
This website will provide you with a quick review of line or reflective symmetry. It also has questions and answers to help you understand line/reflective symmetry.