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Search Results - ((Author:"Challen, Paul") AND DateRange:"Older Than 5 Yrs") AND grade:"4"
4 results
 Book |
What's Going to Happen?Making Your Hypothesis (Step Into Science)by Challen, Paul & Gazlay, SuzySometimes a hunch isn't enough. Learn how scientists make educated guesses called hypotheses to test their theories. A hypothesis is the foundation of the scie... |
Reviewed In:School Library Journal |
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Hurricane and typhoon alert!by Challen, Paul |
Reviewed In:School Library Journal |
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 Book |
Volcano alert!by Challen, Paul |
Reviewed In:School Library Journal |
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Book |
Hurricane and typhoon alert!by Challen, Paul |
Reviewed In:School Library Journal |