COUNTING PATHS ALONG A GRID Probability, Counting and Combinatorics Explore combinatorics by looking at a common type of MATHCOUNTS counting problem – counting paths between two points. End with an extension that connects counting paths to another type of combinatoric... Read More
MODULAR ARITHMETIC Algebraic Expressions and Equations Number Theory Explore Modular Arithmetic by working with remainders to solve problems about very large numbers. Read More