21. The Jasper series includes a variety of videodisc adventures focused on problem formulation and problem solving. 22. The VHD system had advantages over both the competing RCA Selectavision videodisc system and the Laserdisc. 23. On her deathbed, Jennifer asked Gwen to make a videodisc recording of her for Johnny. 24. Every five classrooms should have a color printer, tape recorder, video recorder and videodisc player. 25. He helped expand Bank Street's pioneering role in using interactive technologies like microcomputers and videodiscs . 26. Separately, the company is adding an extensive line of videotapes and DVDs ( digital videodiscs ). 27. Lectures are on videodiscs and online, and tests and teacher consultations are conducted on the Internet. 28. A keel-shaped diamond stylus appeared as a byproduct of the invention of the CED Videodisc . 29. It was also used for the audio tracks on discs of the RCA SelectaVision CED Videodisc system. 30. At that time, ARDEV and all of its videodisc technologies were acquired by McDonnell-Douglas.
