TY - GEN AU - Van de Walle, John A. TI - Teaching student-centered mathematics. Grades 5-8 T2 - Van de Walle, John A. Van de Walle professional mathematics series SN - 0205417973 PY - 2006/// CY - [S.l.] PB - Pearson/Allyn and Bacon UR - 000029/00002993.jpg ER -