A learning space for science educators and students

Free Award-winning Content
Free Award-winning Content

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

About us
Next Generation Science Standards
We support NGSS

Our exclusive content integrates science and engineering practices with disciplinary core ideas and cross-cutting concepts in alignment with the Next Generation Science Standards.

About NGSS

Quick Quiz

The amplitude of a wave is a measure of its

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Module of the day

Earth Structure

Earth's interior structure is composed of layers that vary by composition and behavior. Using principles of physics like gravity and wave…

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Term of the day

Big Bang

[noun] A theory proposed by Georges Lemaitre (originally known as the "hypothesis of the primeval atom") describing the origin of the universe.…

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