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

Bernardo Houssay

Dr. Bernardo Houssay was a pioneering researcher of the endocrine system, the system of glands that secrete hormones in the human…

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Term of the day

carbon-14 dating

[noun] A technique used to determine the age of an organic object by measuring the amount of the radioactive isotope 14C in…

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