Students identify the five major alternative energy sources. In this physical science lesson, students assess the advantages and disadvantages for each type of energy. They complete a concept map using information they researched.

Learners, after analyzing the history of a concentrator, model how a Genesis spacecraft concentrator works by playing a game. In groups of three or four, after being given materials to work with, are challenged to roll the rubber balls...

Seventh graders research on energy conversion. After they have researched several types of energy resources, teams of two to four create posters which depict how these resources can be conserved.

In this math worksheet, students practice finding the solutions to the problems that focus upon the differential operators of vector fields.