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Math Medics
S.o.s. Math: Measure of an Angle
This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.
BBC
Bbc: Bitesize: Ks2: Maths: Shape, Space, and Measurement
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.
Homeschool Math
Homeschool Math: Triangles
This lesson plan provides students with an opportunity to practice drawing and measuring triangles and angles. It also shows pictures and gives definitions of each type of angle and triangle.
University of Georgia
University of Georgia: Arcs, Central Angles, Arc Length & Sector Area
This site provides practice problems for calculating central angles and calculating arc length.
Math Open Reference
Math Open Reference: Constructions
Learn about drawing shapes using only a compass and straight edge or ruler with out measuring any lengths or angles.
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
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...
Lawrence Hall of Science
The Math Page: Trigonometry: Measurement of Angles
Here is a site that clearly and thoroughly explains many topics regarding measurement of angles, including standard position, degree measure, and coterminal angles. There are example problems solved, problems for the student to attempt,...
Khan Academy
Khan Academy: Find Angles in Triangles
Find missing angle measures using the properties of triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Draw Angles
Use a protractor to construct angles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Constructing Angles Review
Review constructing angles with a protractor, then try constructing some of your own.
Khan Academy
Khan Academy: Find Angles in Congruent Triangles
Given two triangles, determine whether they are congruent and use that to find missing angle measures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
PBS
Pbs Learning Media: What's a 360?
In this Cyberchase video segment, Harry tries to snowboard and learns how to measure and identify many common angles.
University of Regina (Canada)
University of Regina: Math Central: Atlatl Lessons Grades 4 12
What is an atlatl? Learn how this Aztec dart throwing tool can be used to teach students such things as distance, radius, and linear and angular velocity. Curriculum strands are provided for each of the many lesson plans for students...
Lawrence Hall of Science
The Math Page: Trigonometry: Radian Measure
Here is a site that clearly and thoroughly explains the radian measure of angles. There are example problems solved, problems for the student to attempt, and answers to the student problems.
E-learning for Kids
E Learning for Kids: Math: Dojo: Area, Measurement, and Angle
Students will play learning games to explore area, measurement, and angles.
E-learning for Kids
E Learning for Kids: Math: Riksjas, Toek Toek: Angles
Students will play interactive games to identify types of angles and measure the angles.
Scholastic
Scholastic: Study Jams! Math: Measurement: Tools of Measurement
A slideshow, a karaoke song to sing along to, and a short multiple-choice quiz on the topic of measurement and the tools that can be used to measure things, depending on the purpose, e.g., temperature, length, mass, angle, time, etc.
Better Lesson
Better Lesson: What Angles Are on a Bat House?
Third graders are preparing to build bat houses. They have calculated surface area, identified nail placement, and will now collect data on angle types in this real-world activity.
Khan Academy
Khan Academy: Angle Basics Review
Review what an angle is and how an angle is measured.
Khan Academy
Khan Academy: Challenge Problems: Inscribed Angles
Solve two challenging problems that apply the inscribed angle theorem to find an arc measure or an arc length.
Math Planet
Math Planet: Geometry: Angles
Angles are explained through examples and a video lesson. [0:48]
University of Cambridge
University of Cambridge: Maths and Sports: Olympic Turns
What angles can you see in these photos of Olympic sports? Can you estimate them? This challenging activity is aimed at older primary pupils at Key Stage 2.
Wolfram Research
Wolfram Math World: Tetrahedron
This math site defines a tetrahedron, gives reference to the Platonic solid, and gives views from varying perspectives. It also provides formulas for veritices of a tetrahedron lieing along the the positive X axis, formulas for area,...