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

Wood is considered a mineral.

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Module of the day

Thermodynamics I

Without heat flow, nothing can move, no chemical reactions can take place, and no machines can run. This module introduces the…

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Term of the day


[noun] A deviation from the normal or expected, sometimes expressed with respect to an average value. Anomalies are described in many kinds…

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