Common Core: 3.MD.8

# Solve real-world and mathematical problems involving perimeters of polygons

Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.
1. ## Find the perimeter of a polygon

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson, you will learn how to find the perimeter of a polygon by using grid paper.

2. ## Find the perimeter of a square or rectangle by adding side lengths

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson, you will learn how to find the perimeter of a square or rectangle by adding the side lengths.

3. ## Find the perimeter of a polygon in real world problems

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson you will learn how to find the perimeter of a polygon by solving real world problems.

4. ## Find perimeter with missing side lengths

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson, you will learn how to find the perimeter of a square or rectangle with a missing side length by using square tiles.

5. ## Find the perimeter of a polygon with more than 4 sides

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson, you will learn how to find the perimeter of a polygon with more than 4 sides by adding the side lengths.

6. ## Use a chart to understand how rectangles can have the same perimeter with different areas

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson you will learn that rectangles can have the same perimeter but different area by building rectangles and organizing information in a chart.

7. ## Use a chart to understand how rectangles can have the same area with different perimeters

Common Core: 3.MD.8 | by: Valerie Krauser

In this lesson you will learn that rectangles can have the same area but different perimeter by building rectangles and organizing the information into a chart.