Citation: B. Grobecker et F. Lawrence, Associativity and understanding of the operation of addition in children with learning differences, LEARN DISAB, 23(4), 2000, pp. 300-313
Citation: B. Grobecker et R. De Lisi, An investigation of spatial-geometrical understanding in students with learning disabilities, LEARN DISAB, 23(1), 2000, pp. 7-22
Citation: B. Grobecker, The evolution of proportional structures in children with and without learning differences, LEARN DISAB, 22(3), 1999, pp. 192-211