In what country can you visit the cities of Glasgow and Edinburgh? How many cells does an amoeba have? Find a tall building in the letters w-r-o-t-e. Plus prefixes and suffixes, measurements, geography, presidents, the elements, percentages, homophones, Grab Bag, and: Ivan the Great ruled Russia from 1462 to 1505. How many years did he reign? Brain Quest Grade 6 quizzes kids on the stuff they need to know when they need to know it, with 1,500 curriculum-based questions and answers reflecting the latest school standards.