| What Is the Proper Subject Matter for Educational Technology |
| L.R.B. ELTON(Institute for Educational Techology, University of Surrey) |
| Letter to the Editor |
| James D. WHITE(Tezukayamagakuin Univresity) |
| Television's Effects upon Cognitive Development −Research on Two Types of Programs |
| Tamotsu FUJINAGA(Ochanomizu University), Hiroshi AZUMA(University of Tokyo), Noriyoshi NITTA(Tokyo Woman's Christian College), Shigefumi NAGANO(The National Institute for Ecuational Research), and Takiko YANASHIMA(University of Tokyo) |
| Two Symbol Systems for Designing Instructional Processes |
| Haruo NISHINOSONO, Eiichi HINO, and Tetsuo FUJITA(Kyoto University for Education) |
| Proper Letter Size for Chalkboard Use |
| Yasutaka SHIMIZU and Yoong-mo AHN(The Center for Research and Development of Educational Technology, Tokyo Institute of Technology) |
| The Present State of Evaluation Studies on the Impact of Edecational television upon Children in Japan |
| Takashiro AKIYAMA(NHK Radio & Television Culuture Research Institute) and Takashi SAKAMOTO(Tokyo Institute of Technology) |
