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Michigan Department of Education Technology-Enhanced Lesson Plan Lesson Title: Geometer’s Sketchpad: Angles Formed by Parallel Lines and a Transversal Downloadable activity at: http://www.keypress.com/catalog/products/software/sampleActivities/Geom etryActivities.html Adapted by: Carolyn Newkirk and Marsha Myles Lesson Abstract: Students identify and measure corresponding angles, alternate interior angles, and alternate exterior angles, and determine which angles are congruent to each other. Subject Area: Mathematics Grade Level: 6th grade Unit Title: Geometry Michigan Educational Technology Standards Connection: Technology Productivity Tools 1. apply common software features (e.g., thesaurus, formulas, charts, graphics, sounds) to enhance communication and to support creativity 2. use a variety of technology resources, including the internet, to increase learning and productivity 3. explore basic applications that promote creativity (e.g., graphics, presentation, photo-editing, programming, video-editing) Grade Level Content Expectations Connection: G.GS.06.01 Understand and apply basic properties of lines, angles, and triangles, including: —triangle inequality —relationships of vertical angles, complementary angles, supplementary angles 582749079 - Page 1 —congruence of corresponding and alternate interior angles when parallel lines are cut by a transversal, and that such congruencies imply parallel lines —locate interior and exterior angles of any triangle, and use the property that an exterior angle of a triangle is equal to the sum of the remote (opposite) interior angles —know that the sum of the exterior angles of a convex polygon is 360º. Estimated time required to complete lesson or unit: One class period of approximately 45-55 minutes Instructional resources: Download student worksheet from web address above. Prior required technology skills: Students should have working knowledge of Geometer’s Sketchpad before this activity. Sequence of Activities: Students will work through the worksheet that accompanies the activity. See entire sequence of plans at: http://www.keypress.com/catalog/products/software/sampleActivities/Geom etryActivities.html Assessments: Post-Assessment: Completed worksheet. Technology (hardware/software): Computers with Geometer’s Sketchpad Software Internet connection to download activity Key Vocabulary: corresponding angles, alternate interior angles, alternate exterior angles, parallel lines, transversal, congruence Application Beyond School: Teacher Reflection and Notes: 582749079 - Page 2