Lesson Plan
University of Texas

Inside Mathematics: Which Shape [Pdf]

For Teachers 2nd - 4th Standards
This task challenges a student to use knowledge of geometrical attributes to identify and describe shapes.
Lesson Plan
University of Texas

Inside Mathematics: Fair Play [Pdf]

For Teachers 3rd - 5th Standards
This task challenges a student to demonstrate understanding of the concept of measurement.
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Geometry

For Students 9th - 10th Standards
The University of Saskatchewan's Department of Mathematics and Statistics provides high school students with online tutorials and exercises on what they deem some of the most important topics in geometry: Triangles, and Circles and Other...
Interactive
Harvard University

Harvard Smithsonian: Everyday Classroom Tools

For Teachers Pre-K - 1st
The focus of this series of lessons is to engage students in an exploration of the world around them. The emphasis is on inquiry as students learn about the earth, sun, light, shapes and more.
Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring Circle Geometry Properties

For Students 6th - 8th
Investigate circles, namely their angles, chords, and tangents using this highly interactive Learn Alberta math. Explore a number of circle geometry properties that can be used to determine unknowns. Be sure to follow the link to the...
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McGraw Hill

Glencoe: Self Check Quizzes 2 Angles

For Students 9th - 10th
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of angles. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It"...
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McGraw Hill

Glencoe: Self Check Quizzes Angles

For Students 6th - 8th
Students can take an online quiz that includes five self-checking multiple choice questions that explore angles. Hints are included.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 1 Angles

For Students 9th - 10th
Use Glencoe's randomly generated self-checking quiz to test your knowledge of angle classification and angle measurement. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page...
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That Quiz

That Quiz: Practice Test: Angles

For Students 9th - 10th Standards
This resource allows users to test their knowledge of angles.
Activity
TeachEngineering

Teach Engineering: Rotary Encoders & Human Computer Interaction

For Teachers 9th - 10th
Students learn about rotary encoders and discover how they operate through hands-on experimentation. Rotary encoders are applied in tools to determine angle measurements and for translations of angular motion. One common rotary encoder...
Unit Plan
Texas Education Agency

Texas Gateway: Making and Verifying Conjectures About Angles

For Students 9th - 10th
Given the relationship(s) among a set of angles, the student investigates the patterns and makes conjectures about the geometric relationships, including angles formed by parallel lines cut by a transversal.
Interactive
Math Playground

Math Playground: Estimate the Angle

For Students 3rd - 5th Standards
Practice estimating the angle by sliding the blue "X" button up and down to open and close the angle. See how many aliens you can zap with the correct answer. Your total correct out of 10 is listed just below the problem.
Interactive
Sophia Learning

Sophia: Sum of Angles in Polygons

For Students 6th - 8th
This tutorial with video and slideshow components investigate the characteristics of polygons as well as how to calculate the interior and exterior angles of any polygon. It offers two PowerPoint presentations and two videos that feature...
Activity
BBC

Bbc: Bitesize: Ks2: Maths: Shape, Space, and Measurement

For Students 3rd - 5th
Interactive lessons featuring 2-D and 3-D shapes, angles, time, and symmetry. For each section, play a learning game, read a lesson that includes comprehensive vocabulary, and take a quiz to find out what you've learned.
Handout
Windstream

Ojk's Precalculus Study Page: Measurement of Angles

For Students 9th - 10th Standards
An introduction to radian measurement, including converting between radians and degrees. Includes several examples and lots of pictures.
Lesson Plan
Oswego City School District

Regents Exam Prep Center: Angles and Triangles

For Teachers 9th - 10th Standards
On this site a viewer can learn about the different types of triangles, and categorized by either angles or sides. Tutorials are also included for interior and exterior angles of triangles. A teacher resource page includes a lesson plan...
Unit Plan
Oswego City School District

Regents Exam Prep Center: Polygons: Interior and Exterior Angles

For Students 9th - 10th
A great resource where you can learn how to calculate the measures of the interior and exterior angles of any regular polygon with these tutorials. There are several practice pages for someone to try. The teacher resource page includes...
Unit Plan
Oswego City School District

Regents Exam Prep Center: Geometric Constructions

For Students 9th - 10th Standards
Learn all about the basic geometric constructions in this test prep lesson. You will explore line segments and points, and understand key terms like the terms parallel and perpendicular. Construction activities and interactive online...
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McGraw Hill

Glencoe: Self Check Quizzes 1 Using Angle Measures

For Students 4th - 8th Standards
Use Glencoe's randomly generated self-checking quiz to test your knowledge of using angle measures. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It"...
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Math Challenges for Families

For Students 2nd - 8th
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
Unit Plan
Texas Education Agency

Texas Gateway: Algebraic Expressions to Represent Angle Properties in Circles

For Students 9th - 10th
Given numerical and/or geometric patterns that represent angle relationships in circles, the student will investigate inscribed angle relationships.
Unit Plan
CK-12 Foundation

Ck 12: Regular and Irregular Polygons

For Students 9th - 10th
[Free Registration/Login Required] Students explore the concept of regular and irregular polygons by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn...
Activity
Math Open Reference

Math Open Reference: Constructions

For Students 9th - 10th Standards
Learn about drawing shapes using only a compass and straight edge or ruler with out measuring any lengths or angles.
Handout
Math Open Reference

Math Open Reference: Angles

For Students 9th - 10th Standards
Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.