Have your kids try this super fun STEM activity using recyclables and other basic materials in this mystery bag STEM building challenge with free printable STEM challenge cards. In this design activity, kids are given a bag of mystery materials. The mystery materials contain an assortment of recyclables and other random items. Then there is a challenge card stating a building challenge to do with those materials. The kids will have to use the “mystery” materials to complete the challenge. Your kids will love the mystery of it all.
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