David E. Dobbs
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Sums of Arithmetic Sequences: Several Problems and a Manipulative
A. Craig Loewen
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Developing Three Distinct Number Patterns from a Single Diagram
David R. Duncan and Bonnie H. Litwiller
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A Focus on Fostering Number Sense Makes a Lot of Sense
Werner Liedtke
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Working Toward Mathematical Literacy
Anne MacQuarrie
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Infinite Sets and Georg Cantor
Sandra M. Pulver
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On Vectorial Proofs, Circumradii and Equilateral Triangles
David E. Dobbs
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Fractions Are Much More Than Pies
Jerry Ameis
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Considering Correlation Coefficients: The Meaning of Zero Correlation
Bonnie H. Litwiller and David R. Duncan
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Lessons Learned from Looking Inside the Classroom
Nancy Drickey