This lesson is great for reviewing the concept of perimeter. The definition and formula are covered, and students have the opportunity to solve 24 problems involving perimeter. Some are adding the perimeter of 2 buildings, comparing the perimeter and finding the difference, and finding the perimeter of odd shaped buildings for which the formula doesn't work nicely.
All of the activities in this presentation are also included in my Area & Perimeter Task Cards
There's also a similar Power Point Lesson on Area