Foerster
Foerster’s Algebra and Trigonometry: Functions and Applications is a rigorous high school textbook by longtime teacher Paul Foerster, known for its plentiful practice, real-world word problems, and strong emphasis on function thinking. Many homeschool families choose it as a solid college-prep path that bridges smoothly into precalculus and calculus. Parents appreciate the detailed explanations, mixed-review problem sets, and the way Foerster steadily builds algebraic maturity rather than just drilling procedures. New copies can be pricey, but used editions are widely available, making this classic text a high-value option for serious math students.
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