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

Earth's magnetic field is constant.

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Module of the day

Ellen Ochoa

Although she was rejected by the space program initially, Ellen Ochoa went on to become the first Hispanic woman to travel…

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Term of the day


[noun] The process of uses a rotating force to separate particles according to density.

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