Chairperson, Graduate Committee: Ritchie WhiteheadTrask, John Henry2016-11-232016-11-231972https://scholarworks.montana.edu/handle/1/11107enMathematics--Study and teachingEducation, SecondaryIndividual differences - a semi-independent study program for secondary mathematicsProfessional PaperCopyright 1972 by John Henry Trask