Education and demonstration – Mathematics – Geometry – trigonometry – or physical mathematic model structure
Patent
1989-10-02
1994-01-25
Harrison, Jessica J.
Education and demonstration
Mathematics
Geometry, trigonometry, or physical mathematic model structure
434211, 434212, 434214, G09B 2302
Patent
active
052811450
ABSTRACT:
The pictorial image transforming manipulatives are instructional visual aid devices adapted for use to demonstrate visually the applications of deductive reasoning in proving most of the geometry theorems in conjunction with a geometry course. The manipulatives can also be used to display visually many graphs which represent algebraic linear equations and inequalities in two variables, and compound inequalities on a number line. These applications of mathematical systems for demonstrated algebraic linear graphs, and other graphs, are designed in conjunction with algebra textbooks.
Each device uses one or more transparent overlays which rotate, translate, translate and rotate, flip over, or flip over and rotate to another position relative to a stationary underlaid plate. The manipulative devices are adapted for use on the overhead projector or for use in direct demonstration without a projector. These devices can be produced in small sizes for student use or in large blackboard sizes. The function of these manipulatives is to demonstrate visually a mathematical concept, a geometry theorem, a geometry problem, or a family of algebraic linear graphs.
REFERENCES:
patent: 2068226 (1937-01-01), Buck
patent: 2167131 (1939-07-01), Weidenborner
patent: 3565462 (1971-02-01), Gottlieb
patent: 3835298 (1974-09-01), DeAndrea
patent: 4435162 (1984-03-01), Schoenwald
patent: 4537576 (1985-08-01), Thorsheim et al.
patent: 4705478 (1987-11-01), Djali
Doyle Jennifer
Harrison Jessica J.
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