A Great Collection of Math Tournament Problems is for students in grades 3-6 who are looking to improve their problem-solving skills. It consists of past All Girls Math Tournament tests along with thorough step-by-step solutions, covering various math topics including Geometry, Algebra, Number Theory, Counting, and Probability. It is written by volunteers of the All Girls Math Tournament, a non-profit student-run organization based in Orange County, California committed to encouraging more girls to pursue STEM fields by holding events, such as their annual math tournament.