Since the PSSC physics program was introduced in 1957 the teachers using the PSSC materials have been meeting twice each year to report their progress, their success, and their difficulties.
Iowa Science Teachers' Journal
© Copyright 1964 by the Iowa Academy of Science
"News and Notes - Area PSSC Meeting at Roosevelt in Des Moines,"
Iowa Science Teachers Journal: Vol. 1
, Article 19.
Available at: https://scholarworks.uni.edu/istj/vol1/iss3/19