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Noitcarf Numbers.
Selwyn, Jasper – Mathematics Teaching, 1980
Noitcarf numbers provide a simulation activity that allows teachers or education students to gain an understanding of the feelings of students who are taught mathematics by a "rules" method. They are actually an abstract presentation of operations with fractions. (MK)
Descriptors: Computation, Elementary Secondary Education, Higher Education, Mathematics Education
Division by Zero.
Hadar, Nitsa – Mathematics Teaching, 1979
Suggestions for teaching the concept of division by zero are given. (MK)
Descriptors: Algorithms, Division, Elementary Secondary Education, Mathematical Concepts