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4-12 years old, Headstart, Hispanic, Latina, Latino, NYC, New York, USA, age 3, age 4, blocks, boy, build, building, child, construct, cooperate, cooperation, education, experiment, experimenting, female, four years old, girl, gravity, hands on, human, learn, learn by doing, learning, male, physical, physics, pre-k, pre-kindergarten, prekindergarten, roll, rolling, stack, structure, toys, two people, vertical, wooden, working together