Showing 31–40 of 66 results

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  Groundhog Graffiti STEM Challenge

  $4.98
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  Guard the Gold STEM Challenge

  $3.98
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  Halloween STEM Challenge Bundle

  $9.98
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  Heavy Hearts Valentine’s Day STEM Challenge

  $3.98
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  Keep it Cool / Make it Melt Summer STEM Challenge

  $3.98
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  Late Winter STEM Challenge Bundle

  $10.98
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  Leprechaun Lockdown STEM Challenge

  $3.98
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  Limitless Luck STEM Challenge

  $3.98
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  Mini Mayflower and Mishoon Thanksgiving STEM Challenge

  $3.98
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  New Earth City STEM Challenge

  $3.98