Supplemental Books
Painless Algebra by Lynette Long is a small $10 paperback meant to serve as a companion to a textbook. The author speaks to kids in their own language avoiding math speak. She covers enough examples to get the point across without boring the reader with technical language. The book is small enough (6in by 8 in) for students to bring with them to school with their other textbooks.
Algebra 1 Textbook Online and free - James Brennan org Solid Algebra 1 textbook organized in a traditional manner making it pretty easy to find explanations. The book can be downloaded as a pdf.
Elementary Algebra by Harold Jacobs - Proclaimed one of the best Algebra 1 textbook ever written and rightly so. This text is both conversational in style yet thorough and comprehensive. A favorite of home schoolers, Jacobs uses engaging theme problems and comics to maintain interest and communicate the purpose behind the math. The author has put a great deal of thought into every practice problem to ensure engaging homework assignments.