All basic concepts and skills learned in third grade are reviewed. Place value to millions; English and metric measures; perimeter and area; factoring; adding, subtracting, and multiplying fractions; multiplying three-digit factors; reducing fractions; time lapse; multiples; basic geometric shapes; divisibility rules; five steps in division; reading a thermometer; writing decimals; and word problems are all taught and reviewed. Each complete subject set includes everything you need for one student for one year. Because the set is complete, you are assured that Study Guides, Study Guide Answers, Test and Quizzes, and Test and Quiz Answers are included and are the latest edition available.