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A taxonomist explains the current classification system for all living things. Beginning with Aristotle's two kingdom division, today there are five kingdoms, with talk of changing to six. Uses the product groupings in a grocery store to clarify the concept. Looks at the differences of each kingdom: Monera, Protista, Fungi, Plantae, and Animalia. Stresses that the more we learn, the more likely this system will change yet again.
(Source: DCMP)
Is light composed of waves or particles? Explores the wave model of light from its earliest roots to our modern understanding of electromagnetism in 17 computer-animated video modules. Expresses Empedocles' belief that light streams from the eye, Aristotle's conception of light as a disturbance in ether, and Euclid's mathematical, ray-centered paradigms. Presents the Cartesian sine wave model, Huygens' principle of bending wave fronts, the electromagnetic spectrum, and aspects of particle theory. Provides an overview of diffraction, interference, polarization, and dispersion. Also explains Young's double-slit experiment.
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Biology related concepts
A collection containing 59 resources, curated by Benetech
