https://doi.org/10.4169/college.math.j.45.1.011 https://www.jstor.org/stable/10.4169/college.math.j.45.1.011 Summary In textbooks, the familiar sine and cosine ...
I DESIRE to offer some suggestions respecting the form and arrangement of the elementary definitions and propositions of the Euclidian geometry. It has appeared to me that the recent German textbooks ...
The Mathematics Teacher (MT), an official journal of the National Council of Teachers of Mathematics, is devoted to improving mathematics instruction from grade 8-14 and supporting teacher education ...
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