Education and demonstration – Mathematics – Arithmetic
Patent
1997-02-19
1999-02-09
Hirsch, Paul J.
Education and demonstration
Mathematics
Arithmetic
434208, G09B 100
Patent
active
058685774
ABSTRACT:
A factor blocks kit having a plurality of cubic, rectangular and triangular prisms and rectangular mats. These prisms have edges (sides) that measure either 1 unit or a 1-digit prime number of units in length. These prisms are scored with unit markings on some of their sides. The bases of the triangular prisms form a 3-4-5 unit right triangle. The kit also includes a number of rectangular mats with sides being a one digit number of units in length. The mats are divided into unit squares. The kit includes teachers guides and student work books in both print and electronic form on the World Wide Web or the Internet.
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