Students construct a bridge that can hold 100 pennies. In this math instructional activity, students evaluate the strength of their bridges. They predict how much weight a bridge can hold based on its design.

This site provides an excellent way to learn about line symmetry. It gives samples of questions that you can answer and self-check.

Definitions are provided line of symmetry, line symmetry, and plane symmetry, and several nice examples are provided that illustrate these definitions.

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....

[Free Registration/Login may be required to access all resource tools.] Distinguish between line symmetry and rotational symmetry

The purpose of this task is for students to identify figures that have line symmetry and draw appropriate lines of symmetry. Aligns with 4.G.A.3.

This site takes a look at symmetry, with a special focus on line symmetry. Here you will find a definition, as well as several examples and real-world applications.

Use Glencoe's randomly generated self-checking quiz to test your knowledge of lines of symmetry and rotational symmetry. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click...

Practice identifying lines of symmetry on shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Geometry lesson on line symmetry with practice exercises.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to state whether the given 2D shapes have line symmetry. Includes video demonstrating a sample problem [1:14] and a set...

[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...

Investigate tessellations using this interactive Learn Alberta math resource. Students will explore transformations, namely line symmetry, rotation symmetry, and translation occurring within a tessellated pattern. Be sure to follow the...

This site gives a description of line symmetry along with a visual representation. There are links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving line symmetry...

[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.

[Free Registration/Login may be required to access all resource tools.] Understanding symmetry and identifying lines of symmetry

Explore lines of symmtery with this interactive lesson regarding lines of symmetry.

[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.

This resource provides information about symmetry, and everywhere it can be found.

[Free Registration/Login may be required to access all resource tools.] Find a figure's lines of symmetry.

In this instructional activity, 3rd graders first examine images and decide whether they are symmetrical or not. Next, they create individual symmetrical shapes with their bodies and identify the line of symmetry present during these...

This presentation provides a tutorial on symmetry. In the tutorial, you will do the following: learn about geometric symmetry, explore line or reflection symmetry, explore rotation symmetry, and explore translation symmetry and frieze...

Mr. Watkins asked his students to draw a line of symmetry for a circle with center $O$ pictured below: Aligns with 4.G.A.3.

Use these interactive activities to explore symmetry.