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Summers, Lawrence Henry

(Encyclopedia) Summers, Lawrence Henry, 1954–, U.S. economist, government official, and educator, b. New Haven, Conn. Educated at the Massachusetts Institute of Technology (MIT) and Harvard, he…

atom

(Encyclopedia) CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)],…

Animated Math Video: Read and Write 0

In this video, students can follow along to learn to read and write the number 0, and to understand the quantity "none" using comparative quantity 1.