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Ch 9: Explorations in Core Math Grade 7 - Chapter 9: Measurement & Geometry

About This Chapter

The Measurement & Geometry chapter of this Explorations in Core Math Companion Course aligns with the same chapter in the Explorations in Core Math textbook. These simple and fun video lessons are about five minutes long and help you learn the essential lessons about scientific concepts, experimental methods, and lab equipment uses.

How It Works:

  • Find the lesson within this chapter that corresponds to what you're studying in the Measurement & Geometry chapter of your textbook.
  • Watch fun videos that cover the measurement and geometry concepts you need to learn or review.
  • Complete the quiz after watching each video lesson to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material, or submit a question for one of our instructors.

Chapter Topics

You'll learn all of the math topics covered in the textbook chapter, including:

  • Formula and definition of perimeter
  • Calculating circumference and diameter using pi
  • How to compute area and circumference of a circle
  • Figuring area of complex figures
  • Working with 3-D figures and nets of 3-D figures
  • Understanding faces, edges and vertices of polyhedrons
  • Explanation and definition of cross section
  • Defining and finding area and volume of prisms and cylinders

Explorations in Core Math is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

10 Lessons in Chapter 9: Explorations in Core Math Grade 7 - Chapter 9: Measurement & Geometry
Test your knowledge with a 30-question chapter practice test
What is Perimeter? - Definition & Formula

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.

Diameter and Circumference Related with Pi

2. Diameter and Circumference Related with Pi

After watching this video, you will be able to tell others how the number pi is related to a circle's diameter and circumference. And using your newfound knowledge, you will be able to calculate the circumference or diameter of a circle.

Circles: Area and Circumference

3. Circles: Area and Circumference

Understanding how to calculate the area and circumference of circles plays a vital role in some of our everyday functions. They serve as the foundation for operating with three-dimensional figures. Learn more about the area and circumference of circles in this lesson.

Area of Complex Figures

4. Area of Complex Figures

Finding the area of shapes isn't always as simple as it is with squares and rectangles. In this lesson, you'll learn how to find the area of complex figures. This includes finding the area of unusual shapes and finding the area of parts of shapes.

Overview of Three-dimensional Shapes in Geometry

5. Overview of Three-dimensional Shapes in Geometry

We are surrounded by three-dimensional shapes. Watch this video lesson to see what some three-dimensional shapes look like, such as a cube, a sphere, a brick, and a cylinder.

Nets of 3-Dimensional Figures

6. Nets of 3-Dimensional Figures

After watching this video lesson, you will be able to deconstruct a 3-dimensional figure into its 2-dimensional net. Learn what kind of shape you will get after opening and flattening your 3-dimensional figure.

Counting Faces, Edges & Vertices of Polyhedrons

7. Counting Faces, Edges & Vertices of Polyhedrons

After watching this video lesson, you will be able to count how many faces, edges, and vertices a polyhedron has. Also, you will learn how the number of faces, edges, and vertices are related.

Cross Section: Definition & Example

8. Cross Section: Definition & Example

This lesson will define cross sections. We will look at famous types of cross sections called conic sections, how cross sections show up in the world around us, and how the study of these is useful in various real world scenarios.

Prisms: Definition, Area & Volume

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.

What Are Cylinders? - Definition, Area & Volume

10. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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