Seesaw development in Appalachia. 'Hickey-horse' in the coastal regions of North Carolina is consistent with other linguistic and ethnic variations." Seesaw A seesaw (also known as a teeter-totter or teeterboard) is a long, narrow board supported by a single pivot point, most commonly located at the midpoint between both ends; as one end goes up, the other goes down. Mechanically, a seesaw is a lever which, like all levers, consists of a beam and fulcrum. The most common playground design of seesaw features a board balanced in the center. A person sits on each end, and they take turns pushing their
North America of the last glacial period, in what is known as the late glacial maximum, occurring around 13,000 years ago. The oldest petroglyphs in North America date from 15,000 to 10,000 years before present, but some South American rock painting dates to 36,000 to 25,000 years ago (with the more recent dating being favored). Genetic research and anthropology indicate additional waves of migration from Asia via the Bering Strait during the Early-Middle Holocene. Before contact with Europeans, the natives of North America were divided into many different polities, from small bands of a few families to large empires. They lived in