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

Density is defined as

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Module of the day

Bone Changes in Rock Climbers

This reading guide provides access to a published, peer-reviewed scientific research article from the Journal of Anatomy. Questions to accompany the…

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Term of the day

carbonic acid

[noun] The weak acid formed when CO2 dissolves in water.

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