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Lesson Planet: Curated OER

#### Common Core Algebra 2, Unit 9

Flip your classroom, or offer engaging visual aids to your lessons with a series of videos that explore the concept of trigonometry. After an introduction to the topic, high schoolers investigate reference triangles, unit circles, and...

Lesson Planet: Curated OER

#### Review Sheets: Trigonometry

Review guide, practice test, homework packet? Yes, yes, and yes as it's all possible with a wonderful trigonometry packet. Every type of problem is there, starting from the unit circle and ending with conic sections.

Lesson Planet: Curated OER

#### Math Handbook: Trigonometry

You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and formulas.

Lesson Planet: Curated OER

#### Attitude Determines Altitude

A fabulous lesson which combines mathematics with space science. Middle schoolers work in cooperative groups in order to research early astronauts and their accomplishments. They look at a variety of rocket and space shuttle designs, and...

Lesson Planet: Curated OER

#### Unit 9 Review: Trigonometric Functions

Terminate a review into a unit circle. Pupils work through 20 items to review the beginning introduction to trigonometric functions, starting with solving right triangles by finding lengths of sides and reference angles and terminal...

Lesson Planet: Curated OER

#### Unit Circle and Radians

Measure angles is easy as pi. Pupils review special right triangles to find exact values for trigonometric functions. Scholars learn about radians and how they connect to measurements in degrees. They find exact and approximate values of...

Lesson Planet: Curated OER

#### Precalculus

Take a step beyond Algebra 2. Learners use the eBook to learn concepts from the typical Precalculus course. Content starts off with a short review of functions in general and moves on to the basic functions, finishing up with more...

Lesson Planet: Curated OER

#### Algebra and Trigonometry

Move on into trigonometry. An informative eBook takes the content of a College Algebra course and adds more relating to trigonometry and trigonometric functions. The content organization allows pupils to build upon their learning by...

Lesson Planet: Curated OER

#### Smarter Balanced Sample Items: High School Math – Claim 3

Communication is the key. A presentation provides 25 sample items for Claim 3, Communicating Reasoning, for the Smarter Balanced High School Math assessment. Items require pupils to answer the question and provide logical reasoning to...

Lesson Planet: Curated OER

#### Module 4: Similarity and Right Triangle Trigonometry

Right you are to use a great resource. Starting with a lesson on dilations, scholars learn about similarity transformations and similar triangles. They use the knowledge to develop an understanding of right triangle trigonometry in later...

Lesson Planet: Curated OER

#### Not So Identities

Don't compromise the identity. Given pairs of equations, scholars determine whether the equations are true for the same set of values. They explain their reasoning, considering whether it's possible to combine the equations into an...

Lesson Planet: Curated OER

#### Module 7: Trigonometric Functions, Equations, and Identities

Show your class that trigonometric functions have characteristics of their own. A resource explores the features of trigonometric functions. Learners then connect those concepts to inverse trigonometric functions and trigonometric...

Lesson Planet: Curated OER

#### Parametric Equations and a Heart

Trigonometry, art, and Valentine's Day come together in a creative activity about parametric equations. Learners calculate several equations before graphing them either by hand, on a graphic calculator, or Excel spreadsheet to curve...

Lesson Planet: Curated OER

#### Reciprocal Identities

Get a better understanding of the trigonometric functions by taking a look at the flip side. Pupils create angles within a unit circle and compare the values of the standard trigonometric functions to their reciprocal functions. The...

Lesson Planet: Curated OER

#### Pythagorean Theorem

A YouTube video efficiently describes the process of using the Pythagorean Theorem. It includes an example of finding the hypotenuse and another that finds the length of a leg.

Lesson Planet: Curated OER

#### Trigonometric Ratios and the Pythagorean Theorem

Take an alternative route with trigonometry and let learners connect a tweaked version of the pythagorean theorem to the original in terms of triangle sides. The assignment leads participants towards deriving the Pythagorean identity...

Lesson Planet: Curated OER

#### Calculations with Sine and Cosine

Practice makes perfect and perfecting those trigonometric functions are vital in trigonometry. The task requires evaluating cosine and sine values at common degree measures before looking at the results. Is there a pattern when the...

Lesson Planet: Curated OER

#### Finding Trig Values

Let's keep trigonometry simple. When given a cosine ratio, learners must use the clues about the quadrant to determine the sine and tangent ratios. The answer key has a complete worked-out solution to help guide pupils through the problem.

Lesson Planet: Curated OER

#### Trigonometry

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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#### Trigonometric Functions: The Unit Circle

This comprehensive problem and note set walks the class through a large part of simplifying trigonometric expressions using the unit circle and identities. From identifying angles to applying appropriate trigonometric ratios, problems...

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#### Similarity and Right Triangle Trigonometry

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...

Lesson Planet: Curated OER

#### Prove the Pythagorean Identity Using the Unit Circle

Looking for another way to prove the Pythagorean Identity, sin2θ + cos2θ = 1? How about using the equation of the unit circle? This video helps listeners understand the role of analytic geometry in the study of mathematics before it...

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#### Proof of Identity

Students explore trigonometric identities. In this Algebra II lesson, students use graphing to verify the reciprocal identities. Using Cabri Jr, students investigate the Pythagorean trigonometric identities and the geometric c proofs...

Lesson Planet: Curated OER

#### Verifying Trigonometric Identities

This quality, short, worksheet provides practice verifying trigonometric identities and completing the included blank unit circle. Learners will also find the exact value of various trigonometric functions given other trigonometric...