Julie King, Peter Rasmussen, \"Key To Algebra Book 4\" Key Curriculum Press | 1991 | ISBN: 1559530049 | 36 pages | PDF | 1,3 MB Key to Algebra was developed with the belief that anyone can learn basic algebra if the subject is presented in a friendly, non-threatening manner and someone is available to help when needed. Some teachers use Key to Algebra as the basic text for individualized algebra course, while others use it as a supplement to their regular hardbound text.Key to Algebra shouldnt replace group exploration of concepts, cooperative problem or class discussions.Books 1-4 are restricted to operations on integers so that students who have not yet mastered fractions can begin their study of algebra. In Books 5-7 operations on fractions are taught as students study rational algebraic expressions. Books 8-10 cover real numbers, graphs, system of equations, square roots and quadratic equations. Together these books comprise a complete introductory algebra course.
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