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

Any kind of rock can melt to form magma.

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Module of the day

Composition of Earth's Atmosphere

Earth's atmosphere contains many components that can be measured in different ways. This module describes these different components and shows how…

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Term of the day

cytosol

[noun] The fluid portion of the cytoplasm that is in every animal and plant cell. It surrounds all of the organelles of…

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