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

Globally, precipitation far exceeds evaporation.

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Module of the day

Uncertainty, Error, and Confidence

There is uncertainty in all scientific data, and even the best scientists find some degree of error in their measurements. This…

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Term of the day

Avery, Oswald

[person] (October 21, 1877 - February 2, 1955) A Canadian-born American physician and medical researcher, considered one of the founders of immunochemistry,…

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