SUMMIT, N.J.--(BUSINESS WIRE)--At the White House Early STEM Symposium today, nonprofit Bedtime Math committed to expand its "math ambassador" efforts to five more cities, enabling math-anxious parents and students to become comfortable with an often dreaded subject. The announcement builds on the success of its Newark Public Schools pilot, which taps the power of parent-teacher conferences to coax math-shy parents to enjoy number play with their kids. Bedtime Math delivers quick, engaging math