Speedstudy Pre-Algebra and Speedstudy Pre-Calculus are not just textbooks on CD-ROMs—they're like having a fun, personal tutor of your very own. These two Speedstudy programs provide a solid educational foundation designed to raise grades and test scores and improve math skills in the classroom and beyond. Using clear explanations, step-by-step animations, and a fun 3-D interface, these products give students the tools they need to master important math concepts. Build skills fast and painlessly, prepare for proficiency exams, and take the worry out of learning math. Each CD-ROM features curriculum-based lessons, designed by educators to help students understand and practice critical thinking and problem-solving skills. Speedstudy Pre-Algebra includes nearly 50 standards-based lessons and hundreds of quiz questions, covering Exponents, Factors, Fractions, Mixed Numbers, Equations, Proportions, Decimals, Percentages, Ratios, Measurement Systems, and Geometric Figures. Speedstudy Pre-Calculus is the ideal preparation for calculus—you'll learn about functions, continuity, independent and dependent variables, functions as variation, the slope of a chord, techniques of finding limits, and other lessons critical to preparation for calculus.