# Ch 22: 3rd Grade Math: Perimeter, Area & Volume

### About This Chapter

## Perimeter, Area and Volume - Chapter Summary

With the video lessons in the Perimeter, Area and Volume chapter, teachers can expand their 3rd graders' knowledge of various concepts such as how to calculate the lateral area and volume of cylinders, cones, prisms and pyramids. They also teach students to solve problems involving rectangles and triangles. Teachers are able to submit questions to instructors and to administer the chapter examinations to their students.

## Chapter Lessons and Objectives

Lesson | Objective |
---|---|

Perimeter: Definition and Counting Method | Students learn how to determine perimeter through a counting method. |

Perimeter of Triangles and Rectangles | In this lesson, students can apply what they've learned about calculating the perimeter of rectangles and triangles. |

Area: Definition and Counting Method | Students are taught how to use the counting method to calculate area. |

Measuring the Area of a Parallelogram | Instructors teach this process to their 3rd graders. |

Measuring the Area of a Rhombus | Students can complete examples and practice what they've learned. |

Measuring the Area of a Rectangle | In this lesson, students learn to apply rectangle formulas. |

Measuring the Area of a Trapezoid | Instructors present their 3rd graders with the steps of this process. |

Areas of Triangles and Rectangles | During this lesson, students learn to find the area of these shapes. |

Prisms: Definition, Area and Volume | Students are taught to define, calculate and illustrate prisms. |

Pyramids: Definition, Area and Volume | Instructors explain the process for determining the volume and area of a pyramid. |

What Are Cylinders? - Definition, Area and Volume | Students have opportunities to illustrate cylinders and to determine their surface area. |

Cones: Definition, Area and Volume | Teachers explain how the volume of a cone is calculated. |

Spheres: Definition, Area and Volume | Students demonstrate how to calculate a sphere's volume and surface area. |

### 1. What is Perimeter? - Definition & Formula

In mathematics, the perimeter is the distance around a two-dimensional shape. The formula for finding the perimeter of certain shapes will be discussed in this lesson, and there will be some examples to help you understand how to calculate the perimeter.

### 2. Perimeter of Triangles and Rectangles

Without realizing it, we calculate and use the perimeter of triangles and rectangles in regular everyday situations. Learn more about the perimeter of triangles and rectangles in this lesson, and test your knowledge with a quiz.

### 3. Area: Definition & Counting Method

Watch this video lesson to learn what area is and how you can count to find the area of certain shapes. You will see how you can use blocks to help you visualize the problem and find your answer.

### 4. Measuring the Area of a Parallelogram: Formula & Examples

Watch this video lesson to learn the simple formula to find the area of a parallelogram. Learn what measurements you need, how to label your parallelogram, and how to use the formula.

### 5. Measuring the Area of a Rhombus: Formula & Examples

Did you know that there are three ways to find the area of a rhombus? Watch this video lesson to learn all three of them. See what information you need for each method as well as the steps required for each.

### 6. Measuring the Area of a Rectangle: Formula & Examples

Look around you, and you see rectangles all over the place. And if you see paint, carpet, or anything that covers a rectangular area, you can be sure that someone has measured the area of the rectangle. Watch this video lesson to learn more.

### 7. Measuring the Area of a Trapezoid

In this video lesson, you will watch and learn how you can find the area of trapezoid. Learn what measurements you need to have on hand as well as the formula that you need to use.

### 8. Area of Triangles and Rectangles

How do you find out the area of rectangles and triangles? Learn how in this lesson! We'll look at the formulas, then practice solving problems for each shape.

### 9. Prisms: Definition, Area & Volume

Watch this video lesson and you will see that there are different kinds of prisms. You will also learn how to separate a prism into its various parts so you can easily find the surface area. You will also learn the formula for the volume.

### 10. Pyramids: Definition, Area & Volume

Do you think of the great pyramids of Egypt when you hear the word pyramids? Watch this video lesson to learn why they are called pyramids and also how to find their surface area and volume.

### 11. What Are Cylinders? - Definition, Area & Volume

Watch this video lesson to learn why soda cans are cylinders and the method by which you can discover how much soda can fit inside by finding the volume. You will also learn about finding a cylinder's surface area.

### 12. Cones: Definition, Area & Volume

Watch this video lesson to learn where in the real world you will see cones. Also, you will learn the formulas for finding the surface area and volume of these cones.

### 13. Spheres: Definition, Area & Volume

Watch this video lesson to learn how you can find the surface area and volume of spheres. Learn the formulas and measurements you need to solve problems and discover how to identify spheres in the real world.

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### Other Chapters

Other chapters within the 3rd Grade Math: Practice & Review course

- 3rd Grade Math: Number Sense & Arithmetic
- 3rd Grade Math: Number Properties
- 3rd Grade Math: Solving Math Word Problems
- 3rd Grade Math: Estimation & Rounding
- 3rd Grade Math: Addition
- 3rd Grade Math: Subtraction
- 3rd Grade Math: Multiplication
- 3rd Grade Math: Multiples of Whole Numbers
- 3rd Grade Math: Multiplication Skills Practice
- 3rd Grade Math: Division
- 3rd Grade Math: Division Skills Practice
- 3rd Grade Math: Simplifying Whole Number Expressions
- 3rd Grade Math: Basic Algebraic Expressions
- 3rd Grade Math: Writing Algebraic Expressions
- 3rd Grade Math: Data & Graphs
- 3rd Grade Math: Probability & Statistics
- 3rd Grade Math: Units of Measurement
- 3rd Grade Math: Introduction to Geometric Figures
- 3rd Grade Math: Angles
- 3rd Grade Math: Triangles
- 3rd Grade Math: Quadrilaterals
- 3rd Grade Math: Symmetry, Similarity & Congruence
- 3rd Grade Math: Fractions
- 3rd Grade Math: Decimals
- 3rd Grade Math: Money
- 3rd Grade Math: Time