TY - BOOK TI - Discovering algebra :an investigative approach : More practice your skills with answers SN - 1559535229 AV - QA155.7.E4 D484 2002 U1 - 512.0285 22 PY - 2002/// CY - Emeryville, CA PB - Key Curriculum Press KW - Algebra KW - Algebra -- Study and teaching (Secondary) ER -