McGuire, Patrick H.2016-11-232016-11-231967https://scholarworks.montana.edu/handle/1/10788enScience--Study and teachingMiddle school studentsLearningPupil discovery versus direct instruction : an evaluation of knowledge retention by students in eighth grade science class at Glendive, MontanaProfessional PaperCopyright 1967 by Patrick H. McGuire