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Please visit http://sciencepowerpoint.com/index.html to see the other 18 units available for students in grades 5-10 that use Powerpoint presentations in a refreshing new way. These presentations act as a road map to deliver important class notes, lab activities, project ideas, discussions questions, review games, videos, websites links and much more. A chronological assessment and class notes follow the presentation. These science units are both effective and easy to teach. Please visit http://sciencepowerpoint.com/index.html to learn more about this exciting and interactive approach to teaching science.