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

Diffusion I

The process of diffusion is critical to life, as it is necessary when our lungs exchange gas during breathing and when…

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Term of the day

Berzelius, Jöns Jakob

[person] Swedish chemist and medical doctor born in Väversunda, Ostergötland (1779-1848). While studying for his medical degree, Berzelius experimented with the use…

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