The author and illustrator of the winningly popular book The Way Things Work presents a new educational television series on some of the largest structures that humans have built. David Macaulay fully explains the construction, as well as supplementary stories of the structures and their builders, and short instructional segments with young children engaged in simple engineering. This episode explains the science behind building bridges and answers the simple question:what keeps a bridge from falling down?DVD Features:Region 0Keep CaseLetterboxed - 1.85Interactive Features: Scene Access Printable MaterialsDVD-ROM Features: BUILING BIG Web Access
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