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We create and provide high-quality, accessible, educational content in the science, technology, engineering and mathematics (STEM) disciplines at the introductory undergraduate level.

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Quick Quiz

Any kind of rock can melt to form magma.

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Module of the day

The Nature of Scientific Knowledge

This module explores the nature of scientific knowledge by asking what science is. It emphasizes the importance of a scientific way…

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Term of the day


[noun] Magnitude; a measure of height from the highest to lowest point on a vertical axis; a measure of the size of…

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