How to Make Fun Watermelon Seed Slime For Summer Learning. Summer is rapidly coming to an end but there is plenty of time to enjoy this watermelon seed slime. You may also love Growing a Seed Activity For Kindergarten Science Kids Activity. Watermelon is easily one of the most popular summer snacks and themes so there was no way I was skipping over the fun of this one. Slime is a surefire hit with kids every time and this is a unique, borax-free slime recipe that they will love to stretch.
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