Better Lesson
Better Lesson: What Is the Perimeter?
I can create polygons and find the perimeter by using the unit squares on my paper
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Similarity
This site contains a lesson plan for high school age students. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.
Better Lesson
Better Lesson: Building a Dog Kennel Day 3
Third graders will be able to use strategies to solve real-world problems involving area and perimeter.