Four-year-old Danny calls out excitedly to a classmate passing by. “Estoy ganando,” he says in Spanish. “I’m winning!” Facing no actual opponents, the boy eagerly strings colored beads onto a pipe ...

PETERSBURG, Mich. (AP) - Leigh Ozuk walked around her first grade classroom noticing the ways her students divided up six blocks. Then, students were grouped into categories based how each one divided ...