Learn the world the way geographers do: on an unlabeled map.
Find-on-map and name-the-feature questions across more than 15,000 countries, states, cities, rivers, lakes, seas and landforms. Guided practice, mixed sessions, a daily challenge and spaced review. Your progress is a mastery map of the world that fills in as you learn. Built first for World Regional Geography courses, with packs instructors share by code. Works offline. No account, no tracking.
Named for Eratosthenes, the Greek scholar who measured the Earth's circumference and gave geography its name.