1. A consolidation and appraisal of science meta-analyses
2. , , , , & Science meta-analysis: final report of NSF Project No. SED 80-12310. Boulder, CO: Laboratory for Research in Science and Mathematics Education, University of Colorado, 1982, 797 pages.
3. Science education: A meta-analysis of major questions
4. The psychology of meaningful learning. New York: Grune & Straton, 1963.
5. The use of advance organizers in the learning and retention of meaningful verbal material.