Word: graded
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Dates: during 1950-1959
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...ninth grade, the first topic considered is the formation of the earth, and various concepts, like those of LaPlace and Jeans, are dealt with. While the subject is not exhausted, the general idea is left of a mass of gas contracting to form the solar system...
About halfway through the ninth grade the Walden students are ready to study man, but they do so first not as historians but as physical anthropologists, noting those details in his physical development, like prehensile grasp, stereoptican view, speech, and erect posture, which distinguish him from other primates...
...last period in the ninth grade is spent in a consideration of ancient history--from the Sumerians through the kingdoms of Egypt, Assyria and Babylonia, the Hebrews, the Minoans of Crete, the Persian Empire, and the Greek city states down to the victory of Philip of Macedon...
This essentially, is the end of the program as it now stands. But subsequent grades do not ignore the groundwork that has been laid. Mathematics, physics, chemistry and biology courses all pick up where the students have left off before. History courses go on through the sixteenth century in the tenth grade, and through the Puritan Revolution, the development of constitutions, the French Revolution and the Industrial Revolution in the eleventh grade. With this background, the twelfth grade in the first term again goes over U. S. history from 1789 to 1917, and in the second studies...
Time will be necessary to assess this curriculum's long-run effects, for it has been in complete operation in the eighth and ninth grades for only three years and is only just now being expanded into the tenth grade. It has had seven years of experiment in the eighth grade and as an idea its history is much older than that...