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Chefrens Pyramid is designed for children ages 10 – 14. The game begins by entering the pyramid at the bottom and working up the pyramid, room by room (there are more than sixty rooms). The mathematics includes mental calculations in arithmetic, approximations, diagrams, math games and puzzles, Cartesian coordinates, percents, number patterns, and basic geometry and algebra. The goal is to emerge at the top of the pyramid within the allotted time period of five hours.