预代数是美国小学6年级开始的数学课程，知识体系完整，可以作为国内教材的有益补充。
本书简介如下：
Offering a uniquely modern, balanced approach, Tussy/Gustafson/Koenig's PREALGEBRA, Fourth Edition, integrates the best of traditional drill and practice with the best elements of the reform movement. To many developmental math students, algebra is like a foreign language. They have difficulty translating the words, their meanings, and how they apply to problem solving. Emphasizing the "language of algebra," the text's fully integrated learning process is designed to expand students' reasoning abilities and teach them how to read, write, and think mathematically. It blends instructional approaches that include vocabulary, practice, and well-defined pedagogy with an emphasis on reasoning, modeling, communication, and technology skills
目录如下：
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