1. Mental effort and video-based learning: The relationship of preconceptions and the effects of interactive and covert practice

   • Katherine S. Cennamo
   • Wilhelmina C. Savenye
   • Patricia L. Smith

   Research Pages: 5 - 16

2. Diagrams as aids to problem solving: Their role in facilitating search and computation

   • William Winn
   • Tian-Zhu Li
   • Donna Schill

   Research Pages: 17 - 29

3. Learning disabled students' interactions with commercial courseware: A naturalistic study

   • Delia Neuman

   Research Pages: 31 - 49

4. Designing computer software for problem-solving instruction

   • Judith A. Duffield

   Research Pages: 50 - 62

5. Learning in tasks that incorporate natural versus unnatural mappings: An example using aircraft instrument comprehension

   • Sam Hicken

   Research Pages: 63 - 71

6. Generic questioning strategies for linking teaching and testing

   • Thomas M. Haladyna

   Development Pages: 73 - 81

7. Hypertext as instructional design

   • David H. Jonassen

   Development Pages: 83 - 92

8. An evaluation of instructional systems development in the Navy

   • Barbara Taylor
   • John Ellis

   Development Pages: 93 - 103

9. Book reviews

   • Earl R. Misanchuk

   BookReview Pages: 104 - 106

10. Information technologies in education: The quest for quality software, by organisation for economic co-operation and development. Paris: Author, 1989

    • David J. Williams

    International Review Pages: 107 - 110

11. New technologies in the 1990's: A socioeconomic strategy, by organisation for economic co-operation and development. Paris, Author, 1988

    • Beth Walden

    International Review Pages: 110 - 111

12. One school, many cultures, by centre for educational research and innovation and organization for economic co-operation and development. Paris, Author

    • James Walsh

    International Review Pages: 112 - 113

13. Research abstracts

    • Donald P. Ely

    Abstract Pages: 114 - 120