Lesson Plan
Curated OER

Area Measures and Right Triangles

For Teachers 9th - 12th Standards
Your class will investigate the relationship among different triangles. This geometry lesson, demonstrates how to make a connection between triangles and the Pythagorean Theorem. They identify the missing side or angle of a triangle.
Lesson Plan
Curated OER

Angle Action 1,2 and 3

For Teachers 8th - 10th
Students investigate angles through construction. In this geometry lesson, students use a protractor to identify the measurement of an angle. They identify angles cut by a transversal and two parallel lines.
Worksheet
Curated OER

Constructing angles

For Students 3rd - 4th
In this angle worksheet, students read a selection on angles and complete three short answer activities about right angles.
Lesson Plan
Curated OER

Exploring Angle Pair Relationships

For Teachers 9th - 11th
Young scholars investigate the relationship between angles of triangles. In this geometry instructional activity, students identify properties of right and non-right triangles. They differentiate between vertical and supplementary angles.
Lesson Plan
Curated OER

Angle-Side Relationships

For Teachers 9th - 12th
High schoolers calculate the different sides and angles of a triangle. In this geometry lesson, students use triangular properties to define the relationship between two triangle. They identify missing angles using the interior angle...
Lesson Plan
Curated OER

Whatcha Gunna Do When the Hulkster's Measuring Too??

For Teachers 8th - 10th
Students measure using tools they have made. In this algebra lesson, students measure the height and distance using non-traditional measuring methods. They apply their findings to algebra and trigonometry properties of measurements.
Worksheet
Curated OER

Angles of Time

For Students 4th - 5th
In this angles of time worksheet, students draw an hour hand on a clock to represent given angles and show a time, then "write about it." Answers included on page 2.
Lesson Plan
Curated OER

Analyzing Body Angles

For Teachers 10th - 12th
Students investigate angles of polygons. In this geometry instructional activity, students identify the relationship between angles and the number of sides in a polygon. They differentiate between sumilarity anf congruence in angles and...
Worksheet
Curated OER

Classify and Measure the angles

For Students 5th - 8th
In this angles worksheet, students measure and classify angles with a protractor. Students complete the measurement of 9 angles.
Lesson Plan
Curated OER

Measuring Body Angles

For Teachers 8th - 10th
Learners use technology to graph and compare angles. In this geometry lesson, students range of motion in the environment. They identify the missing parts of polygons using similarity and congruence.
Worksheet
Curated OER

Rectangles

For Students 10th
In this rectangles worksheet, 10th graders solve 10 problems related to the rectangle illustrated on the sheet. First, they use the rectangle and the given information to solve each of the five problems that follow relating to its angle...
Printables
1
1
Houghton Mifflin Harcourt

Unit 5 Math Vocabulary Cards (Grade 6)

For Students 6th Standards
Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a...
Printables
1
1
Houghton Mifflin Harcourt

Unit 6 Math Vocabulary Cards (Grade 5)

For Students 5th Standards
Acute angles, nets, and vertices are only a few terms that a set of flash cards includes. Among the 108 cards, two types are available; word cards printed in bold-faced lettering, and corresponding definition cards equipped with an...
Lesson Plan
Virginia Department of Education

How Many Triangles?

For Teachers 9th - 11th Standards
Something for young mathematicians to remember: the sum of any two sides must be greater than the third. Class members investigates the Triangle Inequality Theorem to find the relationship between the sides of a triangle. At the...
Unit Plan
PBS

Accessible Shapes

For Teachers 6th - 8th Standards
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
Lesson Plan
Curated OER

Measuring Angles

For Teachers 3rd
Third graders describe an amount of turn from a particular position to another using the 'circular' benchmarks of 0, ++, ++, ++, and full turn. Estimation language such as 'just about', 'between', 'not quite', 'just over', and similar...
Assessment
Bowland

Three of a Kind

For Teachers 6th - 9th
One is chance, two is a coincidence, three's a pattern. Scholars must determine similarities and differences of a regular hexagon undergoing dilation. They look at lengths, angles, areas, and symmetry.
Lesson Plan
Curated OER

Spoonfuls, Cupfuls and Handfuls

For Teachers 2nd
Explore the use of non-standard units for measuring volume with elementary learners. They fill a container and count the number used using cups, spoons, and bottles, build with blocks and count the number of blocks used, and compare and...
Instructional Video10:36
2
2
Flipped Math

Inverse Trig Ratios

For Students 9th - 12th Standards
Put trigonometric ratios into inverse. Scholars learn how to find an unknown angle in a right triangle by using inverse trigonometric ratios. The pupils understand how the inverses undo a trigonometric ratio to provide the angle measure....
Worksheet
Curated OER

Classify and Measure the Angles

For Students 2nd - 3rd
In this angles worksheet, students classify and measure 2 given angles, using a compass to determine the angle within 5 degrees. Worksheet is part of a resource directory site with links to many additional activities.
Lesson Plan
Las Cumbres Observatory

The Cosmic Distance Ladder: Parallax

For Teachers 11th - 12th
Scientists don't have a ruler long enough to measure to the stars, so they rely on math. Scholars learn to calculate the distance from Earth to a star using the parallax method. They use angle measures from different perspectives to...
Lesson Plan
West Contra Costa Unified School District

Investigating Similar Triangles

For Teachers 9th - 12th
Let your use of the resource be in proportion to its usefulness. Pupils investigate similar triangles by measuring side lengths and considering given angle measures. The results of the investigation help develop generalizations about...
Lesson Plan
EngageNY

Drawing Geometric Shapes

For Students 7th Standards
Learners build confidence working with geometric tools and develop their construction techniques in the sixth lesson plan of the 29-part series. Given a geometric description, they use a compass, protractor, or ruler to create it....
Performance
Radford University

Developing a Trigonometry Phone App

For Teachers 9th - 12th Standards
What's one more app? After reviewing how to calculate missing side lengths or angle measures in a right triangle, pupils create instructions for a phone app to do all of the tedious work. They must consider all nine cases of known...

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