Sophia Learning
Sophia: Terms Relating to Circles
This lesson will define the terms center, diameter, radius, chord, circumference, and pi. Students can watch a video tutorial and then take an online quiz.
Sophia Learning
Sophia: Circle Vocab 1
Parts of a circle are defined in this lesson. Take a quiz to assess learning.
Virtual Nerd
Virtual Nerd: What Is Pi?
Take a look at this tutorial to learn about the irrational number pi. [4:41]
Math Antics
Math Antics: Circles: What Is Pi?
Gain a basic understanding of what P is by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [7:58]
Khan Academy
Khan Academy: Circumference and Area of Circles
Understanding the relationship between the radius, diameter, and circumference of a circle.
Khan Academy
Khan Academy: Introduction to Euclidean Geometry: Language of the Circle
In this video student learn formal definition of a circle including tangent and secant lines, diameters, radii, major and minor arcs.
Art of Problem Solving
Art of Problem Solving: Introduction to Circles
Video tutorial uses examples to introduce circles. [6:39]
Loyola University Chicago
Math Flix: Circle Vocabulary
This QuickTime movie provides an opportunity to learn about the vocabulary of a circle. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Illustrating Circle Vocabulary on the Computer
This video explains how to use drawing tools on a computer to draw circles and their parts. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept. [5:59]
Sophia Learning
Sophia: Converting Between Diameter and Radius
Given this lesson and either the diameter or radius of a circle, you'll be able to calculate the other measure.
Sophia Learning
Sophia: Converting Between Diameter and Radius
Given this lesson and either the diameter or radius of a circle, you'll be able to calculate the other measure.
Sophia Learning
Sophia: Converting Between Diameter and Radius: Lesson 4
Given this lesson and either the diameter or radius of a circle, you'll be able to calculate the other measure. It is 4 of 10 in the series titled "Converting Between Diameter and Radius." [2:01]
Sophia Learning
Sophia: Converting Between Diameter and Radius: Lesson 7
Given this lesson and either the diameter or radius of a circle, you'll be able to calculate the other measure. It is 7 of 10 in the series titled "Converting Between Diameter and Radius." [1:56]
Sophia Learning
Sophia: Converting Between Diameter and Radius: Lesson 8
Given this lesson and either the diameter or radius of a circle, you'll be able to calculate the other measure. It is 8 of 10 in the series titled "Converting Between Diameter and Radius." [2:33]
Shmoop University
Shmoop: Attributes of Circles
This video explains circumference, radius and diameter in an appealing way for students to understand.