New Math Flash Cards, Subtraction

New Math Flash Cards, Subtraction

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From the 1950s, particularly after the launch of the Sputnik satellite in 1958, American mathematicians and mathematics educators introduced a variety of reforms in mathematics teaching dubbed “The New Math.” This set of flash cards reflects the way of presenting subtraction problems that emerged.
The set consists of fifty cards, printed with subtraction problems on each side. The problems are written crosswise, with a box for the answer. The solution is printed in red in the upper left corner on the back. Another card lists basic subtraction facts (vertically), and three cards give work sheets and directions.
A mark on the paper box reads: MILTON BRADLEY (/) NEW MATH (/) FLASH CARDS (/) SUBTRACTION. Another mark reads: [copyright] 1965. A third mark reads: 4592.
These and several other sets of flash cards were donated by elementary school teacher Marjorie A. Naidorf.
Compare 2005.0055.06, 2005.0055.07, 2005.0055.08, and 2005.0055.09.
Currently not on view
Object Name
flash cards
date made
ca 1965
Milton Bradley Company
place made
United States: Massachusetts, Springfield
Physical Description
paper (overall material)
overall: 3.5 cm x 10 cm x 15.5 cm; 1 3/8 in x 3 15/16 in x 6 3/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Sherman L. and Marjorie A. Naidorf
See more items in
Medicine and Science: Mathematics
Arithmetic Teaching
Science & Mathematics
Women Teaching Math
Data Source
National Museum of American History
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