Scholastic
Study Jams! Circle Graph
Over a pizza dinner, RJ and Mia discuss how to use a circle or pie graph to represent data. After viewing, data analysts can use a Test Yourself feature to assess their own understanding. This is ideal for use in a flipped classroom lesson.
Math Antics
Angles and Degrees
How do you determine the size of an angle? Pupils learn about degrees and how to measure the size of an angle. The video associates the measurements to types of angles such as acute, obtuse, and right. The additive properties of angle...
Khan Academy
Khan Academy: Geometry: Measuring Angles in Degrees
Explains how to measure an angle in degrees using a protractor. Defines acute, right, and obtuse angles. Practice problems available. [8:22]
Math Mammoth
Math Mammoth: Estimating Angles
Demonstrates how to estimate the size of an angle by comparing it to a familiar common angle. [6:59]
Khan Academy
Khan Academy: Acute, Right, and Obtuse Angles
Explains the properties of acute, right, and obtuse angles. [5:33]
Khan Academy
Khan Academy: Measuring Angles in Degrees
Explains what a protractor is and how it is used to measure the size of angles. Also discusses the different types of angles. [8:23]
CK-12 Foundation
Ck 12: Elem Math: Overview of Classification of Angles
[Free Registration/Login may be required to access all resource tools.] Video describing four types of angles - right, acute, obtuse and straight. [1:19]
CK-12 Foundation
Ck 12: Elem Math: Overview of Measurement of Angles
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how angles are measured in degrees using a protractor and some types of angles. [2:03]
Loyola University Chicago
Math Flix: Complementary and Supplementary Angle Definitions
This video provides an opportunity to learn about complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept. [3:41]
Math Mammoth
Math Mammoth: Lines, Rays, and Angles
Explains what lines, line segments, rays, and angles are, and how to measure an angle opening. [6:28]
Khan Academy
Khan Academy: Angles: Using a Protractor
Shows how to use a protractor to measure an angle. Identifies different types of angles: acute, obtuse, right.
Khan Academy
Khan Academy: Angles: Angle Basics
Definition of an angle. How to denote an angle using points on the angle (including the vertex)
Khan Academy
Khan Academy: Decomposing an Angle
Video explores how to find the measure of angles by adding or subtracting. [1:42]
Khan Academy
Khan Academy: Constructing Angles
Sal uses a protractor to create 10 degrees and 155 degrees angles. [2:41]
Khan Academy
Khan Academy: Drawing Acute, Right and Obtuse Angles
Learn how to draw acute, right, and obtuse angles with given points.
Khan Academy
Khan Academy: Angles: Introduction
Two rays that share the same endpoint form an angle. Learn about angles and the parts of an angle, like the vertex.
Khan Academy
Khan Academy: Acute, Right, & Obtuse Angles
Acute angles measure less than 90 degrees. Right angles measure 90 degrees. Obtuse angles measure more than 90 degrees. Learn about angles types and see examples of each.
Khan Academy
Khan Academy: Angle Measurement & Circle Arcs
Learn to measure angles as part of a circle.
Khan Academy
Khan Academy: Measuring Angles in Degrees
Learn how to measure an angle with a protractor.
Khan Academy
Khan Academy: Measuring Angles Using a Protractor 2
Sal measures several angles with a protractor.
Khan Academy
Khan Academy: Decomposing an Angle
Sal finds the measure of angles by adding or subtracting.
Khan Academy
Khan Academy: Measuring Angles Using a Protractor
Learn to use a virtual protractor to measure angles.
Khan Academy
Khan Academy: Recognizing Angles
Demonstrates how to solve problems that ask you to identify types of angles. [2:15]