Interactive
Doina Popovici

Math Play: Classifying Angles Game

For Students 4th - 6th Standards
Play Tic Tac Toe while practicing your skills of identifying an angle as being acute, obtuse, right, or straight in this online game.
Unit Plan
CK-12 Foundation

Ck 12: Volume of Pyramids: Right Angles in a Game of Pool

For Students 4th - 8th Standards
[Free Registration/Login Required] Students explore classifying angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
Handout
University of Georgia

University of Georgia: Inter Math: Exterior Angles

For Students 9th - 10th
Intermath Dictionary's site defines terms relating to angles, gives examples, and offers interactive exercises.
Activity
Math.com

Math.com: Building Blocks: Classifying Angles

For Students 3rd - 8th Standards
This geometry resource investigates types of angles. Definitions, detailed examples, and practice problems are included.
Unknown Type
Math Open Reference

Math Open Reference: Angle Quiz

For Students 6th - 8th Standards
Students are assessed on different types of angles. Definitions of the angles are included.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Point, Line, Planes, Angles

For Students 9th - 10th Standards
Practice using your graphing calculator for drawing and labeling points, lines, planes, and angles. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each...
Unit Plan
CK-12 Foundation

Ck 12: Volume of Pyramids: Angle Exploration

For Students 4th - 8th Standards
[Free Registration/Login Required] Students explore classifying angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Angle Measure and Plane Figures

For Students 4th Standards
A guide to support parents as they work with their students in angle measure and plane figures.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Singing Angels: Angles

For Students 4th - 5th Standards
Play an interactive game to determine the different types of angles.
Activity
AAA Math

Aaa Math: Types of Triangles Based on Angles

For Students 3rd - 5th Standards
Students can practice classifying triangles based on angle measurements through a series of self-check exercises and timed learning games.
Website
Primary Resources

Primary Resources: Angles

For Teachers 3rd - 5th
A great place to find teacher resources on angles. Includes worksheets PowerPoint presentations and smartboard files.
Unit Plan
CK-12 Foundation

Ck 12: Angle Classification

For Students 4th - 8th
[Free Registration/Login Required] Students explore classifying angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
Interactive
ABCya

Ab Cya: Bow and Angle

For Students 3rd - 6th
Join the heroes Loxley, Arrowyn, Busido, and Mockingbird in this epic adventure of Bows and Angles! Practice measuring and reading angles while you defend yourself from treacherous shadow ninjas.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Pizza (Italian) Restaurant: Angles I

For Students 5th - 6th
In this interactive website, students practice various math skills such as identifying different types of angles, use the degree symbol, estimate and measure angles, and construct angles.
Whiteboard
ClassFlow

Class Flow: Angles in Geometry

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This flipchart is a look at angles in geometry. Drawing, labeling, measuring, special angles: (right, straight, acute, obtuse) and congruence.
Whiteboard
ClassFlow

Class Flow: Angle Measurement

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This flipchart uses the protractor tool to understand the classification and naming of angles: acute, obtuse and right.
Whiteboard
ClassFlow

Class Flow: Angle Facts

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This lesson is a thorough review of all types of angles (e.g. obtuse, right, scalene, isosceles, equilateral, alternate) with wonderful diagrams to reinforce thinking skills.
Unit Plan
Khan Academy

Khan Academy: Identify Triangles by Angles

For Students 3rd - 5th Standards
Practice identifying triangles by their angles as acute, right, or obtuse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Whiteboard
ClassFlow

Class Flow: Angles

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] Practice identifying different types of angles in this flipchart. See examples of the different angles.
Lesson Plan
PBS

Pbs Learning Media: Triangles: Targeted Math Instruction

For Students 9th - 10th Standards
Students will learn how to apply the properties and characteristics of all triangles to solve real-world problems and identify and use the unique characteristics of right, isosceles, equilateral, acute, obtuse, and scalene triangles.
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Pythagorean Theorem to Classify Triangles

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Use the Pythagorean Theorem to determine if triangles are acute, obtuse, or right triangles.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Area of a Triangle and Parallelogram Using Trig

For Students 9th - 10th Standards
How can trigonometry be used to find the area of a triangle or parallelogram? Does the triangle need to be a right triangle, and how accurate can the results possibly be? The answers to these questions are found here along with several...
Handout
Wolfram Research

Wolfram Math World: Cut the Knot! Angles

For Students 9th - 10th Standards
Very good site with links to reviews of various angles.
Activity
Texas Instruments

Texas Instruments: Classifying a Triangles by Their Angle Measure Using Cabri Jr

For Teachers 9th - 10th
This activity uses Cabri Jr to classify triangles according to their angle measure. [Requires Adobe Reader.]

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