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Troxel, Verne Aubry – 1968
The outcomes of 1333 students enrolled in Chemical Educational Materials Study (CHEMS), Chemical Bond Approach (CBA), and a traditional chemistry course were compared on the basis of grade and ability level. For the total group, students taking CHEMS and CBA performed significantly better on the American Chemical Society Cooperative Examination in…
Descriptors: Achievement, Chemistry, Comparative Analysis, Course Evaluation