A learning space for science educators and students
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
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 NGSSModule of the day
Uncertainty, Error, and Confidence
There is uncertainty in all scientific data, and even the best scientists find some degree of error in their measurements. This…
Term of the day
[person] (October 21, 1877 - February 2, 1955) A Canadian-born American physician and medical researcher, considered one of the founders of immunochemistry,…
Science Blog
![Pythagoras and the cult of number perfection]( "Pythagoras and the cult of number perfection")
March 21, 2018
Pythagoras and the cult of number perfection
![Anaximenes of Miletus: Moving to purely naturalistic explanations]( "Anaximenes of Miletus: Moving to purely naturalistic explanations")
March 7, 2018
Anaximenes of Miletus: Moving to purely naturalistic explanations
![Anaximander: Evolution, Earth as a body in space, and the first experiment]( "Anaximander: Evolution, Earth as a body in space, and the first experiment")
February 21, 2018
Anaximander: Evolution, Earth as a body in space, and the first experiment
![Thales of Miletus: Grandfather of the Age of Science]( "Thales of Miletus: Grandfather of the Age of Science")
February 7, 2018
Thales of Miletus: Grandfather of the Age of Science
![Ancient Ionia and the origins of scientific thinking]( "Ancient Ionia and the origins of scientific thinking")
January 24, 2018
Ancient Ionia and the origins of scientific thinking
