Mystery of Twins Worksheet Movie Summary: This rather remarkable video is noteworthy on two counts: the first, computer animation actually shows the development of twins in utero, and second, actual footage of twin placentas is shown, illustrating once and for all just what a single and... (more details for Mystery of Twins*)

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File #1541 Info: Created by Dan Vorgity on March 30, 2011 using New Jersey State standards for students at a grade 6-8 level.

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