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Gary A. Stewart

Where's Green?
Average: 5 (1 vote)
5

The EnteleTrons™ help align the seven colors of the rainbow, while exploring the visible spectrum in a prism....read more

Pages 31 Reads 37
What's the Matter?
Average: 5 (1 vote)
5

The EnteleTrons™ help the three primary states of matter understand their role in the water cycle, also exploring...read more

Pages 34 Reads 129