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

Globally, precipitation far exceeds evaporation.

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Module of the day

Charles Darwin III

Our understanding of the term evolution has changed significantly since Darwin's time. This module explains how Darwin's work helped to give…

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Term of the day


[noun] In science, a control is a system for which the expected change or outcome is well known and is measured or…

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