A figure has symmetry when it can be folded so two halves match or are identical. Examples are shown of line symmetry in the world around us. Practice activities in the video show images and students decide whether it has vertical, horizontal, or n...o line of symmetry.[more]

In this game, students are shown shapes and must identify line(s) of symmetry in each. Shapes shown include isosceles and scalene triangles, a square, a rectangle, and a trapezoid. ( This link is for an interactive game and may take a few minutes t...o load.)[more]

The video gives definition of line symmetry and asks students to identify it within several images. The line of symmetry is drawn on each image after it is shown with out so instructor can easily pause video to give students the opportunity to come u...p with their own solutions. (01:29)[more]

In this video segment from Cyberchase, Bianca wants to learn why her plants keep dying, so she transports them in a carriage to the New York Botanical Garden. A helpful plant expert shows her some patterns in plants, including bilateral and rotationa...l symmetry, before discovering the pattern that may be killing Bianca's plants. Closed captioning. Run time 03:25.[more]

This video defines reflectional symmetry and shows many examples of objects with reflectional symmetry on a computer screen. Examples of identifying line(s) of symmetry on equilateral and isoceles triangles are also shown. ( 2:57)

This video contains a lesson a college student taught to a "pretend" class. In the video, the teacher defines rotational symmetry. She then shows examples of shapes with rotational symmetry and demonstrates how to determine whether or not objects h...ave rotational symmetry. ( 8:40)[more]

An interactive computer screen is used to defiine rotational symmetry, demonstrate finding the number of times an object will have rotational symmetry, and computing degree of rotational symmetry. ( 4:11)

Introductory lesson concerning symmetry. Instructor Larry explains the general idea of symmetry and gives examples with letters in this clip. Instructor uses computer software for demonstration.
run time 3:41

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