Reflection in a Line
A reflection can be thought of as a "flipping" of an object over the line of reflection. In mathematics, the reflection of an object is called its image. Use the first Web site listed below to read about the reflection in a line and see examples of this concept. When you have finished, complete the first 5 practice problems on the second Web site.
Once you understand this concept, you will be creating a matching game for your classmates to play. Using index cards, draw a shape on a coordinate grid and label its points. On a separate card, draw the reflection of this shape on a coordinate grid and again label the points. Do this for 10 different sets of line reflections.
When completed, trade cards with one of your classmates. Place all the cards in front of you facing down. Turn the cards over two at a time and try to match the pairs of line reflections. Continue until all the pairs have been matched.
| Lesson Name: Reflection in a Line | |
| Objective: Students will review the concept of reflection in a line using the lesson on the first Web site and complete 5 practice problems on the second site. They will then create their own matching game using index cards displaying 10 sets of coordinates for line reflections. These games will be played by a classmate. | |
| Grade: (9-12) | Lesson Login: reflect_line-a |
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Additional disciplines: Computer Skills ELA Science |
Materials: Computer with Internet access Index cards (20 per student) Pen or markers |
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For AIS instruction, this lesson has been modified as follows: In the directions, the students are asked to read the information on one Web site instead of two. They are also asked to solve 5 practice problems, not all of them. In the Allowed Sites, one link has been removed. Click here for the original version of this lesson. | |
