Equipped with a 25-pin geoboard and the activities in this book, students calculate area and perimeter; explore the properties of quadrilaterals, triangles, and other polygons; discover formulas; work with number patterns, the coordinate plane, and rotations and symmetry; and investigate circle geometry. Includes a CD with a digital edition of the book and a virtual geoboard to make the activities fun for the whole class. 96 pages.