TY - BOOK AU - Bright,George W. TI - Classroom activities for making sense of fractions,ratios and proportions: 2002 yearbook SN - 0873535197 AV - QA 1 .B75 2002 PY - 2002/// CY - Reston,VA PB - National council of teachers of mathematics KW - Fractions KW - Ratio and propotion KW - propotion ER -