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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.
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Theories, Hypotheses, and Laws
Theories are not based on one scientist's work but on an accumulation of evidence and ideas from many scientists over time.…
Science Blog
![Reposting in Celebration of Halloween: The Scare Factor and Human Survival – The Science Behind Physical Signs of Terror]( "Reposting in Celebration of Halloween: The Scare Factor and Human Survival – The Science Behind Physical Signs of Terror")
October 27, 2020
Reposting in Celebration of Halloween: The Scare Factor and Human Survival – The Science Behind Physical Signs of Terror
![How the Novel Coronavirus Is Different from Everything That Came Before]( "How the Novel Coronavirus Is Different from Everything That Came Before")
July 24, 2020
How the Novel Coronavirus Is Different from Everything That Came Before
![Going “COVID Cuckoo” for a Cure]( "Going “COVID Cuckoo” for a Cure")
May 21, 2020
Going “COVID Cuckoo” for a Cure
![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
