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Peer reviewed Peer reviewed
Bolmgren, Ingmari – Journal of Chemical Education, 1995
Using systematically colored circles to represent the elements, students are guided to a discovery of the important factor that leads to the periodic system. (DDR)
Descriptors: Chemistry, Models, Science Instruction, Secondary Education
Peer reviewed Peer reviewed
Harris, N. D. C.; Bullock, K. – Journal of Biological Education, 1981
Reported is an analysis to determine the real costs of undergraduate student projects and to highlight areas in which economies could be made or efficiency improved. (PB)
Descriptors: College Science, Engineering, Financial Problems, Higher Education