-  The reason why we choose to talk about this topic is because we all like roller coasters, and we would like to learn about how they were invented, how they work, and who holds the records, and then explain it to the class and discuss it.

History of Roller Coasters:

     Roller coasters have been around for a very long time.  The earliest roller coasters were invented by Russians in winter; sled rides held on specially constructed hills of ice, especially around St Petersburg. Built in the 17th century, the slides were built to a height of between 70 and 80 feet, and consisted of a 50 degree drop, and were reinforced by wooden supports. By the late 1700s, their popularity was increasing so much that entrepreneurs elsewhere began copying the idea, using wheeled cars built on tracks. One such company was Les Montagnes Russes à Belleville, which constructed and operated a gravity track in Paris from 1812. The first loop track was probably also built in Paris from an English design in 1846, with a single-person wheeled sled running through a 13-foot diameter loop. None of these tracks were complete circuits.

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