The children babble enthusiastically, exchange stories, and settle down with their notebooks. Many of them are sons and daughters of migrant workers, families crisscrossing the ambiguities and ...

Math teacher Emma Chiappetta uses a three-round exercise to help students not only recognize their errors, but also generate ...

Flower designs on 8,000-year-old Mesopotamian pots reveal a “mathematical knowledge” perhaps developed to share land and ...