Education and demonstration – Mathematics
Reexamination Certificate
2006-03-21
2006-03-21
Fernstrom, Kurt (Department: 3714)
Education and demonstration
Mathematics
Reexamination Certificate
active
07014468
ABSTRACT:
An aid for teach addition and subtraction comprises a single counting member representing a single digit, and consecutive sets of counting members progressing numerically from two members to ten members. The members of each set are interconnected for pivotal displacement relative to one another, and each counting member is provided with shape and color indicia.
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Fay Sharpe Fagan Minnich & McKee LLP
Fernstrom Kurt
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