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

Carbon is a common component of

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Module of the day

Kevin Arrigo

Biological oceanographer Kevin Arrigo investigates questions about changes in polar ecosystems due to a changing climate. This research profile explores Arrigo's…

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Term of the day

chemical reaction

[noun] A process in which atoms and molecules recombine by forming or breaking chemical bonds. Chemical reactions form new products that…

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