This is a FREE collection of fun sheets, activities, and mathematical games for grades 3 through 5. All of these worksheets were developed as part of the after school math club at the Norman E. Day Elementary School (grades 3-5) in Westford, Massachusetts. The fun sheets are based around topics such as order of operations, sequences and series, and word problems, while the activities and games deal with topics such as graph theory, cryptography, group theory, probability, and computer logic. Des