Spectrum Geometry includes lessons, perfect for students in grades 6Ð8, that strengthen math skills by focusing on points, lines, rays, angles, triangles, polygons, circles, perimeter, area, and more. Spectrum Middle School Math helps students apply essential math skills to everyday life. The lessons strengthen math skills in Geometry, Algebra, and Data Analysis and Probability. The variety of activities also helps extend problem-solving and analytical abilities. The workbooks in this series feature easy-to-understand directions and are aligned to current state standards. Today, more than ever, students need to be equipped with the essential skills they need for school achievement and for success on proficiency tests. The Spectrum series has been designed to prepare students with these skills and to enhance student achievement. Developed by experts in the field of education, each title in the Spectrum workbook series offers grade-appropriate instruction and reinforcement in an effective sequence for learning success. Perfect for use at home or school, Spectrum is the learning partner students need for complete achievement.