00585 a2200193 4500 115725 9780325029634 por PL 510 OCO O´Connell, Susan. . ed. 156 p. + 1 cd Subtraction - Study and teaching. Addition - Fiction. BR-BrIDEA BR-BrIDEA Mastering the basic math facts in addition and subtraction strategies, activities & interventions to move students beyond memorization Susan O´Connell Heinemann 2011 BK 0 0 ddc 0 0 12.27 12.27 2019-03-15 0 PL 510 OCO 00043147AGC 2024-01-23 14:56:38 2024-01-23 BK 115725 115725