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Lesson Plan
Curated OER

Trig Transformations

For Teachers 9th - 12th Standards
Learners investigate trigonometric function.  In this Algebra II lesson, students explore functional notation and transformational graphing of trigonometric functions. 
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Handout
2
2
Curated OER

Trigonometry Review Sheet

For Students 9th - 12th Standards
Get the trig facts fast, and use the review sheet as a guide in the classroom. The worksheet also includes a document version if any changes are needed to the problems. The information includes a small degree/radian chart, a graph of all...
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Lesson Plan
Curated OER

Identities and Trigonometric Values

For Teachers 9th - 11th
Young scholars solve trigonometric equations. In this precalculus instructional activity, students prove trigonometric identities using the Pythagorean Theorem. They apply the addition formulas for sine and cosine to prove different...
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Lesson Plan
Curated OER

Finding Identical Numbers - Standard Form

For Teachers 6th - 8th
Students explore the concept of recognizing identical numbers in different forms. In this recognizing identical numbers lesson, students recognize identical numbers in word form and number form.
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Lesson Plan
Curated OER

Equations, Formulas and Identities

For Teachers 8th - 10th
Students rewrite word problems using the correct symbols. In this algebra lesson, students find the trigonometric identities and use them to solve problems. They write equations for the trigonometric ratios.
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Lesson Plan
Curated OER

Investigating Trigonometric Ratios Through Similar Right Triangles

For Teachers 9th - 10th
Students identify similar and congruent right triangles. For this geometry lesson, students use trigonometric ratios to identify missing sides and angles of a triangle. They differentiate similar and congruent triangles.
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Lesson Plan
Curated OER

Mistaken Identities, Misrepresentations, and Changes of Mind

For Teachers 4th - 6th
Learners study a play and then discuss the mistaken identities, misrepresentations, and changes of mind that occur. In this discussion of plays lesson plan, students learn new vocabulary words and discuss and differentiate between these...
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Worksheet
Curated OER

Expand Using Identities

For Students 5th - 6th
In this expanding using identities worksheet, students use 2 identity properties given to solve 5 equations. Answers are included on page 2.
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Lesson Plan
Curated OER

Exercise Set 5.1: Trigonometric Functions of Real Numbers

For Teachers 10th - 12th
In this trig functions worksheet, students find the trig values of 46 problems.  Students find the trig values of various radian measures.  Students use trig properties to prove trig identities.
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Lesson Plan
Curated OER

Ratios in Right Triangles

For Teachers 9th - 12th Standards
Learners calculate the sides of right triangles in this trigonometric ratios lesson. They use Cabri Jr. software and TI-83 or TI-84 calculators to find the side lengths and their ratios to each other for various triangles. The provided...
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Lesson Plan
Curated OER

Exploring Trigonometric Ratios

For Teachers 9th - 10th
Learners identify the ratios of trig functions. In this trigonometry lesson, students construct triangles and use it to derive the values of sine, cosine and tangent. They use Cabri software to create the visual of the identities.
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Lesson Plan
EngageNY

Trigonometry and the Pythagorean Theorem

For Students 9th - 11th Standards
Ancient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...
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Unit Plan
1
1
Mathematics Vision Project

Similarity and Right Triangle Trigonometry

For Teachers 10th - 12th Standards
Starting with similar triangles and dilation factors, this unit quickly and thoroughly progresses into the world of right triangle features and trigonometric relationships. Presented in easy-to-attack modules with copious application...
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Assessment
Inside Mathematics

Hopewell Geometry

For Teachers 9th - 12th Standards
The Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...
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Worksheet
Curated OER

Trig Card Game (Review of Trig Identities)

For Students 9th - 11th
In this trig card game, students play a card game to form and identify trigonometric identities.  Students collect cards to form identities.  This one-page instructional activity contains instructions for making cards and the rules of...
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Worksheet
Curated OER

Identical Cups

For Students 1st - 3rd
In this identical cups worksheet, students find 2 identical cups and circle them. Students find the identical cups out of 6 cups total.
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eBook
Schoolcraft College

Trigonometry

For Teachers 9th - 12th Standards
This trigonometry textbook takes the learner from a basic understanding of angles and triangles through the use of polar coordinates on the complex plane. Written by a mathematician-engineer, examples and problems here are used to...
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Lesson Plan
EngageNY

Unknown Angles

For Students 9th - 10th Standards
How do you solve an equation like trigonometry? Learners apply their understanding of trigonometric ratios to find unknown angles in right triangles. They learn the meaning of arcsine, arccosine, and arctangent. Problems include basic...
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Worksheet
Curated OER

Trig Identities and Antiderivatives

For Students 11th - Higher Ed
In this math worksheet, students investigate the use of the trigonometric identities and the antiderivatives. They are asked to memorize the identities.
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Lesson Plan
Curated OER

Italy and Regional Identities

For Teachers 6th - 12th
Learners explore, analyze and study the regional identities of Italy through its accents and local foods. They demonstrate and show similar traits that are found throughout Italy. Each student researches information on an annotative map...
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Worksheet
Curated OER

Inverse Trig Functions: Domain and Range

For Students 9th - Higher Ed
For this trigonometric functions worksheet, students calculate the domain and range of the three basic trig functions. There are 6 equations.
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Lesson Plan
Curated OER

Identical Pictures (Forms of Transportation)

For Teachers Pre-K - K
In this identical pictures worksheet, pupils analyze the four pictures of forms of transportation in each row. Students circle the pictures that are the same.
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Lesson Plan
Virginia Department of Education

Special Right Triangles and Right Triangle Trigonometry

For Teachers 9th - 11th Standards
Right triangles are so special! Use special right triangles to discover the trigonometric ratios. Pairs construct special right triangles and find the values of the ratios of the sides. In the process, they discover the ratios stay the...
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Assessment
CCSS Math Activities

Smarter Balanced Sample Items: High School Math – Target O

For Students 10th - 12th Standards
Trigger an increased understanding of trigonometry. Young mathematicians answer a set of questions that require finding trigonometric ratios using similarity and solving real-world problems involving trigonometry. The questions all come...

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