208 pages with 75 laboratory lessons and solutions in Algebra and Geometry suitable for use in middle and high schools. Students explore and discover various algebraic and geometric concepts and then use their discoveries and observations to develop solutions to algebraic problems that are provided with each lab. This book requires the use of the Geometer's Sketchpad, Version 5, a registered trademark of Key Curriculum Press. The book was supported by Key Curriculum Press with a grant to the authors.