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Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
1/2/2022
For decades, teachers drilled American school children using flash cards that gave simple arithmetic problems. The advent of inexpensive electronic calculators in the 1970s made it possible to do much routine arithmetic automatically. To teach school children the meaning of basic operations, new dev
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
1/2/2022
In the early 1960s, the Chicago firm of Playskool introduced this educational toy for children three to six years old, seeking to give them an early familiarity with numbers. It has two rows of relatively large rotating wooden rectangular blocks, each with a row of square rotating wooden blocks belo
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
1/2/2022
During the late 1950s and 1960s, American scientists and educators proposed using machines for instruction. Teaching machines and related programmed textbooks used a careful sequence of questions for teaching. Jerome C. Meyer and later William R. Hafel, both of Sunnydale, California, believed that i
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
1/2/2022
Introduced in mid-1976, the Little Professor is a non-printing electronic calculator modified to present simple arithmetic problems. A correct answer prompts another problem on the eight-digit display. An error delivers the message, "EEE." The colorful keyboard shows a professor with whiskers and gl
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
5/3/2012
This apparatus was designed by Catherine Stern, a physicist by training and the founder of a Montessori school in her native Germany. Stern and her husband were of Jewish descent, and emigrated to New York City in 1938 to avoid persecution by the Nazis. There she developed these materials, descri
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