The physics concepts in grade school science have been determined by examining some thirty grade school science readers. These have been classified by grades.
Proceedings of the Iowa Academy of Science
© Copyright 1941 by the Iowa Academy of Science, Inc.
Lapp, C. J.
"Physics Concepts in Grade School Science (Abstract),"
Proceedings of the Iowa Academy of Science: Vol. 48:
, Article 84.
Available at: https://scholarworks.uni.edu/pias/vol48/iss1/84