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

Statistics in Science

Scientific research rarely leads to absolute certainty. There is some degree of uncertainty in all conclusions, and statistics allow us to…

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Term of the day


[noun] The combined mass of living or once-living organisms in a given area.

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