National Council of Teachers of Mathematics
The Math Forum: Suzanne's Mathematics Lessons 2001
This site by Suzanne Alejandre offers lesson plans, activities and resources covering topics in algebra, geometry, data analysis, number & operations, and measurement. The contents of this site are aligned with the NCTM standards and...
ReadWriteThink
Read Write Think: Bridging Literature and Mathematics
Contains plans for five 50-minute interdisciplinary lessons that ask students to write about math-related, informational books such as "Actual Size" (Jenkins, 2004) and "If You Hopped Like a Frog" (Schwartz, 1999). Students use books...