Great Math Project! From Fast Times of a Middle School Math Teacher: Scaling Up Candy Wrappers. Check out her blog!
Area/Perimeter robots - get the children to draw robots and write the area and perimeter of each section.
Fun and FREE lesson to teach Area & Perimeter using literature!
Toilet Paper Surface Area and Volume
Fun way to work on scaled drawing... Fast Times of a Middle School Math Teacher: Scaling Up Candy Wrappers
Fast Times of a Middle School Math Teacher: Scaling Up Candy Wrappers
Step into 2nd Grade with Mrs. Lemons
This set of ORDER UP! focuses on FINDING PERIMETER OF IRREGULAR POLYGONS. Not only do students have to solve each problem for 1-2 missing sides, they will also have a journal prompt to write to! ($)
Mystery Perimeter Freebie from Laura Candler - Complete hands-on lesson for introducing students to finding unknown sides of irregular polygons - CCSS Math Content 3.MD.D.8 and also effective with 4th and 5th grade for review and remediation
Here's a terrific post with a wealth of resources and ideas on teaching perimeter, area, and volume.