How do you know when students understand something? How can you design learning experiences that make it much more likely that students understand content and apply it in meaningful ways? Since 1998, thousands of educators have used "Understanding by Design" to answer these questions and create more rigorous and engaging curricula. Now, this…

The 2006 NCTM Sixty-eighth Yearbook focuses on students' and teachers' learning in statistics centered on a set of activities. Topics include the relation between mathematics and statistics, the development and enrichment of mathematical concepts through the use of statistics, and a discussion of the research related to teaching and learning…