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  Comprehension: How, What, Why? How Does a Tornado Form? (primary/elem)
Comprehension: How, What, Why? How Does a Tornado Form? (primary/elem) - preview 1
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One page numbered text explains how a tornado forms, part of abcteach's primary investigative series, "How, What, Why?" Includes three questions and both a primary and an elementary level spelling list.
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