Arithmetic Teacher (1969) Vol. 16, No. 5
, An official journal of THE NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS MAY 1969 Volume 16, Number 5 Towards the Golden Jubilee Year-1970 Julius H. Hlavaty Dots, plots, and profiles Charlotte W. Junge A second example of informal geometry: milk cartons Marion Walter In Tennessee: making use of the NCTM film series Jam
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