Sharma is CEO and co-founder of Zearn, a nonprofit dedicated to transforming K-8 math education. Sharma is also the author of "Math Mind: The Simple Path of Loving Math," a book that dives into how we ...

Forbes contributors publish independent expert analyses and insights. Linda Darling-Hammond is an expert on education research and policy. PISA scores reveal deep problems in how the United States ...

I own a digital 24-hour clock (i.e., a military time clock) that displays in HH:MM format. Each digit uses the standard seven-segment display in which seven lights toggle on or off to form numbers, as ...