TY - GEN TI - Building large models to show equivalence, an exploration, Clip 3 of 4: Erik justifies a train model for one third DO - https://doi.org/doi:10.7282/T3XD1074 AU - Maher, Carolyn Alexander PY - > 1993-10-07 KW - Sample of human subjects KW - Mathematics education KW - Learning, Psychology of--Case studies KW - Critical thinking in children--New Jersey--Case studies KW - 3-5 KW - Number and operations KW - Problem solving KW - Reasoning and proof KW - Communication KW - Connections KW - Representation KW - 4 KW - Fractions KW - Classroom KW - Public school KW - Mixed KW - White KW - Classroom view KW - Side view KW - Operations with fractions KW - Manipulatives (Education)--Case studies KW - Fraction as number KW - Comparing fractions KW - Equivalent fractions KW - Cuisenaire rods KW - Indirect reasoning KW - Reasoning by upper and lower bounds KW - Direct reasoning KW - Physical models ER -