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Great shot capturing the results for experiment 1b - Using three layers of red cellophane blocks UV light from the beads qu… | Experiments, How to find out, Mission
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Amazon.com: Steve Spangler Science UV Color Changing Beads, Set of Approx. 250-Colors Included: Red, Purple, Yellow, Orange- Experiments for Kids, Educational Toys : Toys & Games
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UV Beads | Purchase Ultraviolet Color Changing Beads for Your Next Classroom Experiment - Educational Innovations
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