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REFERENCES FOR MATHEMATICS TEACHERSWilliam L. Schaaf · The Mathematics Teacher · 1953
REFERENCES FOR MATHEMATICS TEACHERSWilliam L. Schaaf · The Mathematics Teacher · 1952
REFERENCES FOR MATHEMATICS TEACHERSWilliam L. Schaaf · The Mathematics Teacher · 1951
RESPIRATION IN PLANTSWilliam L. Schaaf · 1915
TESTING THE CLARITY OF MATHEMATICAL CONCEPTSWilliam L. Schaaf · 1939
THE DILEMMA OF VOCATIONAL MATHEMATICSWilliam L. Schaaf · 1942
SOME SIDELIGHTS FOR THE ARITHMETIC TEACHERWilliam L. Schaaf · 1947
ARITHMETIC FOR ARITHMETIC TEACHERSWilliam L. Schaaf · 1953
Postai History of MathematicsWilliam L. Schaaf · 1975
Mathematics as a cultural heritageWILLIAM L. SCHAAF · The Arithmetic Teacher · 1961
The Highest RungWilliam L. Schaaf · National Mathematics Magazine · 1942
Ponderings on Pocket-sized PolyhedraS. Louise Gould · The Mathematics Teacher · 2012
What Are These Things Called Variables?SIGRID WAGNER · The Mathematics Teacher · 1983
The Many Uses of Algebraic VariablesRandolph A. Philipp · The Mathematics Teacher · 1992
Finding Skewed Lattice RectanglesDick J. Smith and Eric F. Errthum · The Mathematics Teacher · 2012
Babylonian QuadraticsROBERT D. McMILLAN · The Mathematics Teacher · 1984
Understanding Connections between Equations and GraphsEric J. Knuth · The Mathematics Teacher · 2000
The Purple Milk ProblemKasi C. Allen · The Mathematics Teacher · 2012
The Birthday Problem, EmpiricallyDustin L. Jones · The Mathematics Teacher · 2012