Better Lesson
Better Lesson: Going on a Math Hunt
Second graders ask questions of adults they know about how they use math, then students will design a method to share what they have found.
Other
Kodak Lesson Plans: Math
Kodak's site has five lesson plans integrating photography into math lessons. Activities involve geometry and other math concepts for fourth grade on up.
Michigan State University
Michigan State University: Lets Net: What's for Dinner?
In this lesson unit, students locate recipes for a dinner meal, create a list of ingredients, then calculate the quantities needed for a given number of people, and the overall cost.