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Coal produces more than half of the electricity used in the United States, and is our most abundant domestic nonrenewable energy source. The students will comupte the cost of electricity used to light their classroom and their school for one hour through one year, the number of kilowatt ours of...
Grade Level   5 6 7 8 9 10 11 12
Classroom Activities Curricula and Instruction
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2
How do the natural shapes of gemstone crystals control what the final cut gem will look like? Where do gemstones come from? What makes them sparkle? Where do their colors come from? There's nothing as eye-catching as a piece of fine jewelry covered in beautifully colored gemstones. Natural...
Grade Level   5 6 7 8 9 10 11 12
Classroom Activities Curricula and Instruction
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