Arithmetic Teacher (1965) Vol. 12, No. 5
THE ARITHMETIC TEACHER Volume 12, numbe1 5 MAY 1965 A Piagetian conservation concept Elbert D. Overholt Machines III an•in Ka1lin Numeration-a fresh look TVayne Peterson Modern mathematics in a toga Pa'ul B. Johnson Division with fractionslevvel of meaning llarry C. Johnson Also, more about number bases, nonsense arith
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