# Ch 21: Circle Types & Parts

Third to fifth grade students can review circle types and parts using these short, engaging videos. End-of-lesson quizzes help students assess their grasp of the material covered.

## Circle Types & Parts - Chapter Summary

Students in the third to fifth grade can use these lessons to learn important terms related to circles, like inscribed angles, radius and perimeter. The videos also teach how to calculate area, perimeter, and radius for full and quarter circles as well as semicircles. Use the lesson quizzes and chapter exam to see your students' strengths, as well as areas that need more work.

## Chapter Lessons and Objectives

Lesson Objective
Parts of a Circle This lesson provides an overview of some of the basic parts of a circle.
Central and Inscribed Angles Students learn how to describe and identify central and inscribed angles.
Circles: Radius and Diameter Instructors provide formulas that show how to calculate both radius and diameter of circles.
Circles: Area and Circumference Students study not only what the definitions of area and circumference are, but also how to determine them using formulas.
Semicircles: Calculate Area, Perimeter, Radius, and Diameter In this lesson, instructors introduce the semicircle and explain how to calculate some of its parts.
Quarter Circles: Calculate Area, Perimeter, and Radius This lesson gives a brief overview of quarter circles, and shows how to figure out the area, perimeter, and radius of them.
Circle Word Problems Students learn how to work with word problems that have circles.

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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