Arithmetic Teacher (1968) Vol. 15, No. 8
THE ARITHMETIC TEACHER Volume 15, number 8 DECEMBER 1968 Grids, tiles, and area Kathryn Besic Strongman Elementary school metric geometry Eugene F. Krause An application of modular number systems JuUa Adkins Some innovations in the professional preparation of teachers William C. Lowry Also, an introd11ction to the conc
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