This was prepared as a study of the effect the supplementary
use of portions of a science course titled "Tested Overhead
Projection Series" would have on an introductory physical
science program. Four classes were used with similar ability
and composition. Two classes were control and two were
experimental. Comparison of results indicated some supplementary
presentations may have improved learning, but when all
presentations of the supplementary program are considered
the results suggest this supplementary approach had little
or no effect.