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Make Bath Time Educational with Tub STEM - GeekMom
I do not think you need to spend much money to have some STEM fun. My children have enjoyed STEM challenges using cardboard boxes and broken pool toys. They have built forts and fairy houses. And one time I make a tinker kit for only $5.That said, I spent a little money on our Tub STEM and the learning and peace has been priceless.