Critical Thinking Co.'s Mathematical Reasoning elementary-level supplement reinforces 4th-6th grade math concepts and skills by asking students to apply analytically-based arithmetic skills to a wide range of problems and concepts. Over 1,000 engaging, concept-based activity sheets are conveniently grouped into the categories of: number & numeration, geometry, operations, measurement, relations, and tables and graphs. Each sheet provides directions, an example, and problems for students to work. 283 worksheets in total. 320 reproducible pages, softcover. Answer key included in the back of the book. Grades 4-6.