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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
The Periodic Table of Elements
The modern periodic table is based on Dmitri Mendeleev’s 1896 observations that chemical elements can be grouped according to chemical properties…
Term of the day
[noun] An asymmetrical distribution of electrical charge across an object. Polar molecules contain a dipole.
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
