Policy initiatives from Kentucky to California are espousing curriculum based on NCTM-backed core concepts that students understand through induction rather than memorization, teaching based on guided mastery rather than didactic instruction, and assessment that is open-ended rather than machine-scorable. This article highlights obstacles to…

In the American Federation of Teachers' Thinking Mathematics collaboration, teachers have become equal partners with researchers to create staff development aimed at mathematics instruction. Researchers and 5 visiting practitioners have cooperated to create mathematics foundations materials conceptualized in 10 guiding principles for mathematics…

The National Council of Teachers of Mathematics recently published two documents emphasizing solving nonroutine problems in meaningful contexts. "Curriculum and Evaluation Standards for School Mathematics" (1989) describes what students should know and a framework for developing appropriate curricula. "Professional Standards for…