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

Which element is classified as metalloid?

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Module of the day

Scientific Controversy

Controversy isn't always a bad thing. It exists in every field of science and in many cases clarifies and advances our…

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Term of the day

critical habitat

[noun] In the context of the US Endangered Species Act, the geographic area that is essential to conserving a threatened or endangered…

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