REFERENCES
- Dale, Edgar, and Chall, Jeanne. “A Formula for Predicting Readability.” Educational Research Bulletin, 27, 1948.
- Dull, C. E., Metcalf, H. C. and Williams, J. E. Modern Physics. New York: Holt, Rinehart & Winston, 1964.
- Holton, G. H., Rutherford, F. J., and Watson, F.G. Harvard Project Physics: Experimental Version. Cambridge, Mass.: Harvard University Press, 1967.
- Lockard, J. David, ed. Sixth Report of the International Clearinghouse on Science and Mathematics Curricular Developments. College Park: University of Maryland, 1968. (ERIC: ED 020 143)
- Mackay, Lindsay D. “Changes in Victorian Physics Students During Two Years of Physics Study.” The Australian Physicist (July 1970), 103–109.
- Pella, Milton O., and Sherman, Jack. “A Comparison of Two Methods of Utilizing Laboratory Activity in Teaching the Course—IPS.” School Science and Mathematics, 64 (1969), 303–314.
- Physical Science Study Committee. Physics. 2nd ed. Boston: D. C. Heath & Co., 1965.
- Welch, Wayne W. “A Summative Evaluation of the PSNS Course.” Journal of Research in Science Teaching (in press).