Comparison of elementary grade students with (N=42) or without (N=42) learning disabilities (LD) on their logical-mathematical structures of thought found that, though both groups generated grouping relationships, children with LD tendered to generate solutions showing less coordinated structures of thought. For both groups, scores on the…

This article describes constructivist principles of learning in geometry specific to children's imaginal anticipations in line measurement and fractions. Application with seven sixth grade students with learning disabilities found that students had difficulty coordinating and imagining second-order and higher nested relationships that could be…