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Wikipedia: Phlogiston Theory

For Students 9th - 10th
Wikipedia offers detailed information on the Phlogiston Theory, a discredited 17th century theory hypothesis regarding combustion.
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Max Wertheimer Gestalt Theory Book

For Students 9th - 10th
Full-text English translation of Gestalt Theory (1924) by Max Wertheimer.
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Heider Balance Theory

For Students 9th - 10th
An explanation of Heider's balance theory along with an example that shows how the theory works.
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Aviation Internet Group: Aviation Theory

For Students 9th - 10th
Collection of articles ranging from basic to advanced on aerodynamics theory.
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Integrated Publishing: Theories of Magnetism

For Students 9th - 10th
This site from Integrated Publishing provides three different examples of theories of magnetism.
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Simon Fraser University: All About Chemical Bonds

For Students 9th - 10th
G.N. Lewis (1875-1946), chemist whose work included devising the theory of chemical bonding
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[ Image: Nyerere Embraced Mao and His Theory of Collective Farming]

For Students 9th - 10th
This BBC obituary of Julius Nyerere takes a look at his life and his political accomplishments.
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Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
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Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
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Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Proceedings of the Friesian School/the Quantacized Atom

For Students 9th - 10th
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Graphic
Curated OER

Who Dunnit to the Dinosaurs?

For Students 9th - 10th
"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...
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Paleoindian Cultural Complexes

For Students 9th - 10th
Excellent overview of early migration theories, including Bering Land Bridge (Clovis), Coastal Migration Route, Megafauna extinction, European hypothesis, etc. Site offers additional links that expand on theories as well as a timeline...
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Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
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Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
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Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
Graphic
Curated OER

Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
Graphic
Curated OER

Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
Graphic
Curated OER

Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.
Graphic
Curated OER

Contagion: The Spread of Eugenics Throughout American Popular Culture in the 20s

For Students 9th - 10th
A very complete look at the theory of eugenics, the pseudo-scientific idea that fed into the nativists' search for the "superior" American. This article explains how companies used this theory to sell their products.

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