Worksheet
Curated OER

Identify Angles: Obtuse, Right, Straight and Acute

For Students 5th - 6th
In this triangle learning exercise, students identify angles as either obtuse, right, straight or acute. A reference web site is given for additional activities.
Worksheet
Curated OER

Measuring, Drawing, and Naming Angles

For Students 6th - 10th
In this angles worksheet, students name and measure six angles.  Students then draw four angles with a protractor given the degree measure.
Worksheet
Curated OER

Identify Triangles: Acute, Right, Obtuse, Straight

For Students 5th - 6th
In this triangles instructional activity, students draw angles with given measurements and identify each as either acute, right, obtuse or straight. A reference web site is given for additional activities. 
Worksheet
Curated OER

Angles measure and classify

For Students 5th - 8th
In this angles learning exercise, students measure angles with a protractor and figure out if it is acute, right, obtuse, or straight. Students complete 6 problems.
Lesson Plan
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An Introduction to Angles

For Teachers 4th - 8th
Learners identify and create angles. In this angle measurement instructional activity, students use sticks to make models of angles, then measure and name each angle.
Lesson Plan
Curated OER

What is my Angle? App

For Teachers 6th - 12th Standards
Learners estimate angle measures in this this estimating angle measures lesson. They use an application on their graphing calculator that shows various settings involving angles and then they estimate the angle measure of a clock's...
Lesson Plan
Curated OER

Classify and Measure the Angles

For Teachers 5th - 7th
In this measuring angles worksheet, students use protractors to measure 9 angles and classify them as obtuse, straight, acute or right angles.
Worksheet
Curated OER

Describe Five Polygons

For Students 6th - 9th
In this polygons worksheet, students use the parallel, acute, right, obtuse, straight, and reflex to describe the five shapes provided.
Worksheet
Curated OER

Identifying Triangles

For Students 5th - 7th
In this triangles practice worksheet, learners respond to 4 questions that require them to identify the pictured triangles as acute, right, or obtuse triangles.
Worksheet
Curated OER

Angle Comparison to Right Angles

For Students 5th - 6th
For this angles worksheet, students solve 4 problems in which an angle is analyzed and measured. Students tell if each angle is greater than, less than or equal to a right angle.
Worksheet
Curated OER

Learning About Triangles

For Students 4th - 6th
Upper graders label four triangles and fill in the labels correctly. They draw three original triangles and answer the questions about them.
Lesson Plan
Curated OER

Angle Action

For Teachers 5th - 7th
Young scholars measure and label specified angles. In this angles lesson plan, students use a protractor to find angles that are acute, obtuse, and reflexive. Young scholars then label each angle and match the angles the correct...
Lesson Plan
Curated OER

Polygons and Angles

For Teachers 6th
Sixth graders estimate the measurement of angles and then measure the exact distance using an angle ruler. In groups, they explore shapes and recognize the characteristics acute, obtuse and right angles. Students sketch required shapes,...
Worksheet
Curated OER

Measuring Angles

For Students 5th - 6th
For this measuring angles worksheet, students solve 10 problems in which angles are measured with a protractor and labeled with: acute, obtuse, right.
Worksheet
Curated OER

Classify Triangles

For Students 4th - 7th
Here is a classifying triangles practice instructional activity in which learners sharpen their problem solving skills as they solve six story problems.
Worksheet
Curated OER

Identify Angles: Acute, Right, Obtuse and Straight

For Students 5th - 6th
In this angles worksheet, students identify a set of angles as either acute, right, obtuse or straight. A reference web site is given for additional activities.
Lesson Plan
Curated OER

Measuring Angles

For Teachers 6th - 8th Standards
Middle schoolers explore angle measure as they estimate angle measure and measure and draw angles of less than 360 degrees. The lesson emphasizes the use of estimation when measuring angles.
Worksheet
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Classifying Triangles

For Students 6th
In this classifying triangles worksheet, 6th graders write the type of triangle, acute, right or obtuse, for 9 pictures of triangles, answers included.
Worksheet
Curated OER

Independent Practice 2: Triangles

For Students 6th - 8th
In this triangle worksheet, middle schoolers identify given triangles according to their sides and angles. Afterward, students draw triangles to match given descriptions. This one-page worksheet contains 15 problems.
Lesson Plan
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Angle Land and Angle Aerobics

For Teachers 6th
Sixth graders investigate different types of angles. In this geometry lesson, 6th graders use a protractor to identify acute, obtuse, and straight angles.
Lesson Plan
Curated OER

Angles in Art

For Teachers 5th - 9th
Students utilize their handheld and the Angles program to create a non-objective artwork. Images created by famous artists who have utilized angles in their art work are examined.
Printables
K-5 Math Teaching Resources

Triangle Pack

For Teachers 4th - 6th Standards
With so many different types of triangles, it can be a challenge for young mathematicians to keep them all straight. Luckily this set of printable triangles is here to engage children in comparing and sorting triangles by their...
Lesson Plan
Curated OER

Searching for Angles and Lines

For Teachers 6th - 8th
Middle schoolers work to find and reinforce concepts related to lines and angles. They identify the characteristics of shapes that have one, two, and three dimensions. The students also work on definitions related to the geometry of shapes.
Interactive
Curated OER

Try These Angles! Exploring Angles

For Students 5th - 8th
In this angles worksheet, students answer multiple choice questions about different types of angles in shapes. Students complete 10 questions.

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