Unit Plan
Scholastic

Scholastic: Study Jams! Math: Geometry: Lines of Symmetry

For Students 6th - 7th
Explore lines of symmtery with this interactive lesson regarding lines of symmetry.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Lines of Symmetry

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Understanding symmetry and identifying lines of symmetry
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identify and Count the Lines of Symmetry in Various Shapes

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and take an assessment on identifying and counting lines of symmetry in various shapes.
Handout
Math Is Fun

Math Is Fun: Lines of Symmetry of Plane Shapes

For Students 3rd - 4th Standards
Looks at the lines of symmetry in different types of polygons. Includes ten practice questions. Each question is accompanied by an explanation of the answer.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Lines of Symmetry

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Distinguish between line symmetry and rotational symmetry
Interactive
Mangahigh

Mangahigh: Shape: Lines of Symmetry

For Students 9th - 10th
Identify the lines of symmetry of the given shape.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Lines of Symmetry

For Students 6th - 7th
[Free Registration/Login may be required to access all resource tools.] Identify line, bilateral, and rotational symmetry.
Activity
Maths Challenge

Maths challenge.net: Lines of Symmetry

For Students 9th - 10th Standards
A "one star" geometry problem that requires finding the visual pattern and applying logic with pattern recognition to find the lines of reflective symmetry.
Study Guide
Oswego City School District

Regents Exam Prep Center: Working With Line Symmetry

For Students 9th - 10th
This site provides an excellent way to learn about line symmetry. It gives samples of questions that you can answer and self-check.
Study Guide
Oswego City School District

Regents Exam Prep Center: Intuitive Notion of Line Symmetry and Plane Symmetry

For Students 9th - 10th
Definitions are provided line of symmetry, line symmetry, and plane symmetry, and several nice examples are provided that illustrate these definitions.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Reflection Symmetry

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to determine whether or not a shape has reflection symmetry and how to draw lines of symmetry.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Reflection Symmetry

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Find a figure's lines of symmetry.
Lesson Plan
Oswego City School District

Regents Exam Prep Center: Intuitive Symmetry: Point, Line, Plane, Rotational

For Teachers 3rd - 8th Standards
Investigate the concept of symmetry at this test prep site. See detailed definitions and picture examples, answer the questions in the interactive practice pages, and do the classroom activity where students use a digital camera to...
Website
Wolfram Research

Wolfram Math World: Geometry

For Students 9th - 10th
This MathWorld tutorial provides detailed overviews of the concepts and theorems associated with geometry. Most of the Math World sites are extensive and some require higher math knowledge to understand, links to terms and topics are...
Graphic
Other

Symmetry Around the World

For Students 3rd - 7th Standards
This resource provides information about symmetry, and everywhere it can be found.
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....
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Reflections

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students about reflections and how to find the coordinates of a reflected figure.
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: Geometry: Rigid Transformations

For Students 6th - 7th
[Free Registration/Login may be required to access all resource tools.] Identify different types of transformations.
Activity
Other

Finite Geometry Notes: Diamond 16 Symmetry Puzzle

For Students 9th - 10th
At this site see if you can solve the "Diamond 16" puzzle. Change the patterns to create ordinary or color exchange symmetry. This is just one of several challenging puzzles at this site. Links to similar puzzles and games.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Midpoint Formula

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept introduces midpoints of line segments.
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...
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...