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

Confidence Intervals

Through history, important scientific advances have been made in connection with brewing beer. The module begins at the Guinness Brewery with…

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Term of the day

first ionization energy

[noun] The energy required to remove one mole of electrons from one mole of neutral, gaseous atoms, to form one mole of…

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