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.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Riksjas, Toek Toek: 2 D Space: Symmetry

For Students 4th Standards
Students will play interactive games and explore symmetry.
Activity
National Council of Teachers of Mathematics

The Math Forum: Line Symmetry

For Teachers 3rd - 5th Standards
This site from The Math Forum is a great site if you are looking for activities to engage your students in learning about line symmetry. Peruse this collection of activities for one or two or four that would be right for your students....
Website
PBS

Pbs Learning Media: Patterns in Nature

For Students 3rd - 8th
In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.
Activity
Houghton Mifflin Harcourt

Houghton Mifflin Harcourt: Saxon Activity Center Real World Investigation: Symmetry Around Us [Pdf]

For Students 3rd - 8th
Use this internet lesson to explore different types of symmetry in nature. Learners examine line symmetry, rotational symmetry, and bilateral symmetry. An integrated math, language art, and art lesson. Acrobat Reader required.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining Image Modifications to Create Symmetry

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to state how many more squares on a grid need to be shaded in order to give a shape line symmetry. Includes video...
Handout
The Math League

The Math League: Symmetric Figure

For Students 3rd - 5th Standards
This tutorial features several examples of symmetric figures to explain how the line of symmetry works.
Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Angle Measure and Plane Figures

For Students 4th Standards
A guide to support parents as they work with their students in angle measure and plane figures.
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: A Shard or Two

For Students 3rd - 6th Standards
Archaeologists have just uncovered an ancient plate. They need your help to determine the original size of the plate. Try this challenge where you use concepts of symmetry and estimation to uncover the solution. An activity from the NCTM...
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.
Unit Plan
Khan Academy

Khan Academy: Identify Symmetrical Figures

For Students 3rd - 5th Standards
Practice identifying symmetrical shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Interactive
Quia

Quia: Geometric Terms Flash Cards

For Students 2nd - 8th Standards
Do you need practice remembering or learning different geometry vocabulary words and definitions? The flash cards at this web site are for you! There is a link to a list of terms with definitions you can click if you want to see if you...