Education and demonstration – Mathematics – Arithmetic
Patent
1990-07-31
1992-08-04
Apley, Richard J.
Education and demonstration
Mathematics
Arithmetic
273434, 340756, 434323, G09B 1902, G09B 506
Patent
active
051353989
ABSTRACT:
An electronic teaching device (10) provides several mathematical activities including Place Value, Trade, Target, Solve It, Word Problems, Estimate, Select and Calculator. The Place Value activity enhances the understanding of numbers by pictorially displaying the place values. The Trade activity enhances the understanding of addition and subtraction by allowing the user to trade between the ones' place value and the tens' place value to properly perform a mathematical operation. The Target activity emphasizes logical reasoning and problem solving. The Solve It activity uses the place-value system to develop logical reasoning.
The Word Problems activity tests the user's knowledge of basic mathematical terms and facts. The Estimate activity develops the ability to estimate answers to problems. The Select activity allows the user to recognize basic math operations.
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patent: 4321046 (1982-03-01), Oda et al.
patent: 4340374 (1982-07-01), Culley
patent: 4340375 (1982-07-01), Sakave
patent: 4946391 (1990-08-01), Hawkins et al.
patent: 4959017 (1990-09-01), Thompson et al.
Bitter Gary G.
Greenberg Robert C.
Howard Veronica B.
McCormack Brian C.
Thornton Glen A.
Apley Richard J.
Donaldson Richard L.
Hiller William E.
Leubecker J.
Texas Instruments Incorporated
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