At EiE, we’re constantly improving our curriculum as we discover more about how children learn. Our preschool pilot tests have been full of surprises and insights. Our testing has shown us how much preschoolers love to learn, but it’s also taught us that sometimes children’s knowledge of the properties of materials doesn’t override their drive to use the coolest-looking material—at least not at first! Katy Laguzza, the senior curriculum developer and lead of our Early Childhood project, shared a hilarious scene she observed in a preschool classroom that helped our team to understand the unique perspectives of preschoolers. The class was engineering a raft (a CD) to float a toy above water. To make the raft float, they would choose materials to attach to the bottom of the CD using Velcro.