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Title: Not worth to buy!
Review: I have purchased over 100 dolars on science projects from smithsonian institute to teach my six grader, these were a waste of money, they are all nothing but toddler toys, upon receiving them we though we would give it a try anyway, now I regret not returning all of them right away. We barely used them sincce my son is a six grader and these are for kinder garden science projects.
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