Joseph G. R. Martinez
Sequenced learning activities to help students build conceptual bridges from arithmetic to algebra. The focus is on understanding equivalent algebraic expressions, an area in which U.S. students scored poorly on the TIMSS.
Isabel Perkins and Alfinio Flores
Some differences in representations of mathematical concepts and procedures of recent immigrants and considerations for success of recent immigrants.
Ok-Kyeong Kim and Ken Simms
How students explored geometric properties of the South Korean flag using proportional reasoning.