FEATURES & DETAILS:
- Copyright: 2002
- Language: English, Spanish
- Color
- Animated
- MARC records, Catalog Card Kit and Single Main Entry Cards are available
- Features: Chapter Select, Discussion Questions & Activities
- Technical: Single Layer, Single Sided, Full Screen
- DVD Region: ALL
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PRODUCT SUMMARY
For sale in U.S. and Canada only-- In Telecommunications, a visiting inventor investigating a stream of flying boulders discovers the islanders’ primitive communication system and decides to help them upgrade to one that is more efficient and less dangerous. The inventor introduces the telephone -- a device that uses electricity, light and radio waves to transmit sound messages. The islanders discover that fiber-optic systems make communicating over long distances even easier than phone lines. They learn how fax machines work and how cell phones make it possible to talk to anyone almost anywhere in the world! Part of the multivolume The Way Things Work DVD Series, based on the best-selling book by David Macaulay. A teacher's guide is included and available online.
EDITORIAL REVIEWS
"The series is humorous, informative and very educational. Explanations are clear and relevant, with neccesary diagrams to explain exactly how things work...These are exceptional physics videos that merit a place in all educational collections."- School Library Journal (August 2003)