by Key Curriculum Press
Mardel Price $5.28
Some teachers find that their students benefit by working through these books before enrolling in a regular algebra course--thus greatly enhancing their chances of success. Others use "Key to Algebra" as the basic text for an individualized algebra course, while still others use it as a supplement to their regular hardbound text. Allow students to work at their own pace.
The "Key to Algebra" books are informal and self-directing. The authors suggest that you allow the student to proceed at his or her own pace. Book 8 covers Graphs.