Lesson Plan
Teachers' Domain

#### Introduction to Angle Measure

For Teachers 4th - 6th Standards
An all-encompassing package provides video clips that demonstrate real-world activities that have to do with angles. After watching the Cyberchase cartoons, learners discuss why a "v" shape is used to measure a turn. A pair of vital...
Worksheet
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DK Publishing

#### Using a Protractor

For Students 3rd - 5th Standards
Learn how to measure acute, right, and obtuse angles with a protractor. After reviewing the way the protractor works, fourth graders measure nine angles on their own. For extra practice, have them measure different angles in their...
Worksheet
Curated OER

#### Acute and Obtuse Angles

For Students 4th - 5th Standards
Take a look at these angles: What kind are they? Give mathematicians practice identifying obtuse, acute, and right angles in this categorizing activity. Each type is pictured and explained at the top, and scholars examine nine sample...
Lesson Plan
Curated OER

#### Angles

For Teachers 3rd - 5th
Learners identify obtuse and acute angles in comparsion to a right angle. They identify obtuse, acute, and right angles. Pupils use "Shape Measure" to construct obtuse, acute, and right angles. They review line segements to locate right...
PPT
Curated OER

#### Year 5 Unit 2b

For Teachers 4th - 5th
This slide-show is packed with information relating to a variety of mathematical concepts. Intended as an accompaniment to a full unit, this resource provides definitions, explanations, and opportunities for learners to practice their...
PPT
Curated OER

#### Angles

For Teachers 3rd - 4th
A professional-looking presentation focuses on measuring angles.. Each of the slides requires learners to calculate the measurement of an angle that's created by two intersecting lines. The key is to remember that angles on a straight...
Lesson Plan
Curated OER

#### Angles - Digger and the Gang

For Teachers 4th - 6th
Learners explore angle estimation and measurement. In this angle lesson, students define obtuse, acute, and right angles, and practice measuring angles using a protractor. Learners participate in an online angle estimation activity.
Interactive
Curated OER

#### Types of Angles

For Students 9th - 12th
In this online math worksheet, students perform calculations which allow them to identify 3 types of angles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
Worksheet
Curated OER

#### Acute or Obtuse Angles

For Students 6th - 7th
In this geometry worksheet, students view ten angles of varying degrees and identify if the angle is acute or obtuse. The students write the answer on the lines provided.s
Lesson Plan
Curated OER

#### Symmetry in Paper Airplanes

For Teachers 5th - 8th
Students explore symmetry.  In this geometry and scientific inquiry lesson, students design paper airplanes with middle line symmetry, as well as right, obtuse, and acute angles.  Students measure the plane's angles using a protractor,...
Worksheet
Curated OER

#### Pythagorean Theorem

For Students 9th
In this Pythagorean theorem worksheet, 9th graders solve and complete 6 various types of problems. First, they find the length of a right-angled triangle's hypotenuse. Then, students determine which triangle is described and explain...
Lesson Plan
Curated OER

#### Travel Triangles

For Teachers 8th - 11th
Learners demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
Worksheet
Curated OER

#### Identify the angles - acute, right, obtuse, and straight

For Students 6th - 10th
In this angles worksheet, students draw the angles described to them and then decide whether it is an acute, right, obtuse, or straight angle. Students complete 4 problems.
Worksheet
Curated OER

#### Identifying Angles

For Students 5th - 8th
In this angles practice activity, students respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse angles.
Worksheet
Curated OER

#### Identify Angles

For Students 5th - 8th
In this angles practice worksheet, students respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse triangles.
Worksheet
Curated OER

#### Identify the Angles

For Students 5th - 7th
In this angle review worksheet, students examine 4 angles and identify each of them as acute, right, obtuse, or straight angles.
Lesson Plan
Curated OER

#### Sorting Angles

For Teachers 4th - 7th
In this sorting angles worksheet, young scholars distinguish the differences between right, obtuse and acute angles. Students determine what type of angle thirteen angles are as shown.
Lesson Plan
Curated OER

#### Hey! What Is Your Angle?

For Teachers 5th
Fifth graders create and classify straight, right, acute and obtuse angles. In this clever lesson, 5th graders utilize pretzel sticks to form different types of angles. Best of all, they get to eat them at the end!
Lesson Plan
Curated OER

#### Angle Action

For Teachers 5th - 7th
Students measure and label specified angles. In this angles lesson, students use a protractor to find angles that are acute, obtuse, and reflexive. Students then label each angle and match the angles the correct definition. This lesson...