Spectrum Math helps reinforce basic and advanced math skills. Age-appropriate lessons are progressive, building on prior material. Chapters feature pre-tests and post-tests, plus mid-tests and a final test, which help track progress. Concepts covered include fractions & decimals, perimeter, area & volume, classifying geometric figures, preparing for algebra and graphing on the coordinate plane. Features a complete answer key. Correlated to current state standards. 160 pages.