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Mathigon is part interactive textbook and part virtual tutor for grades 6-12. Mathigon makes math active and fun.
Mathigon covers:
Foundations: Numbers & Arithmetic, Equations and Functions, Geometry, and Probablity & Statistics.
Intermediate: Algebra, Geometry, Probability & Discrete Mathematics (Graphs, Codes & Ciphers, Game Theory).
Advanced: Algebra & Analysis, Geometry & Linear Algebra, Calculus, Probability & Statistics.