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 fact families, adding & subtracting through 100, composing 2-D & 3-D shapes, place value and measurement. Features a complete answer key. Correlated to current state standards. 160 pages.