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

Population Genetics

Changes in the genetic makeup of a population affect the incidence of certain traits and diseases within the population. Beginning with…

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Term of the day


[verb] To determine or check the accuracy of an instrument used for quantitative measurements, or to make corrections in or to adjust…

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