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Lesson Plan
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Curated OER

The Unit Circle

For Teachers 9th - 11th Standards
Young scholars solve problems using the unit circle. In this precalculus lesson, students identify angles using the properties of the unit circle. They observe the trigonometric graphs and sine, cosine and tangent.
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Lesson Plan
Curated OER

The Corner Problem

For Teachers 11th - Higher Ed
Students explore the concept of the corner problem. In this corner problem lesson, students use the TI-NSpire to determine the maximum length a rod can be and still pass horizontally around a corner. Students use similar triangles to...
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Lesson Plan
Curated OER

Intro to Trigonometry

For Teachers 6th - 8th
After being introduced to the basic trigonometry functions, middle schoolers calculate the height of school landmarks. They experiment with different angles to find the correct height.
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Lesson Plan
Curated OER

Investigating the Idea of Tan

For Teachers 5th
Fifth graders use tan to solve problems involving right-angled triangles. They solve equations of the form tan(8) =a, for a between 180 degrees and 360 degrees. They state the value of tan (8) in special cases.
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Lesson Plan
Curated OER

Diagonals and Altitudes

For Teachers 6th - 8th
Middle schoolers discover the mathematical way to find the dimensions of a diagonal. Using this process, they complete a worksheet in which they identify the relationships between different degree triangles. They review their answers...
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Activity
1
1
Curated OER

Access Ramp

For Teachers 9th - 12th Standards
Just about every public building that your students are familiar with has an access ramp which complies with ADA requirements. As it turns out, designing such a ramp is an excellent activity to incorporate slope, the Pythagorean Theorem,...
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Lesson Plan
Curated OER

Using Trigonometry

For Teachers 5th
Fifth graders explore the use of trigonometry to find unknown sides and angles in right-angled triangles, taking the concepts that were developed in the previous unit and looking at different ways of practicing the new skills. Students...
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Lesson Plan
Mathematics Assessment Project

Calculating Volumes of Compound Objects

For Teachers 9th - 12th Standards
After determining the volume of various drinking glasses , class members evaluate sample responses to the same task to identify errors in reasoning.
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Lesson Plan
Texas Instruments

The Leaning Tower of Pisa

For Teachers 9th - 12th Standards
Learners estimate the equation of a line, angle of elevation and depression in this math lesson plan. They analyze e famous landmark design and make connections to algebra and geometry. They will also generate an equation, model the x...
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Unit Plan
EngageNY

Complex Numbers and Transformations

For Teachers 11th - 12th Standards
Your learners combine their knowledge of real and imaginary numbers and matrices in an activity containing thirty lessons, two assessments (mid-module and end module), and their corresponding rubrics. Centered on complex numbers and...
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Lesson Plan
Curated OER

Law of Cosines

For Teachers 7th - 9th
Students model scenarios using functions and their properties. In this trigonometry lesson, students calculate the angles of sine, cosine and tangent. They perform operation using a calculator.
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Lesson Plan
Curated OER

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

For Teachers 8th - 10th
Pupils measure using tools they have made. In this algebra lesson plan, students measure the height and distance using non-traditional measuring methods. They apply their findings to algebra and trigonometry properties of measurements.
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Unknown Type
Khan Academy

Khan Academy: Trigonometric Ratios in Right Triangles

For Students 9th - 10th Standards
Given the side lengths of a right triangle, find the sine, cosine, or tangent of one of the acute angles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Pythagorean Theorem for Solving Right Triangles

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Finding unknown sides in a triangle using other sides and angles.
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Unknown Type
Khan Academy

Khan Academy: Solve for an Angle in Right Triangles

For Students 9th - 10th Standards
Given two sides in a right triangle, find one of the acute angles using trigonometry. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Lengths of Sides in Isosceles Right Triangles

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn what an isosceles right triangle is, the relationships between the sides of an isosceles right triangle, and how to find the length of an unknown...
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Activity
Windstream

Ojk's Precalculus Study Pages: Solving Right Triangles

For Students 9th - 10th Standards
An introduction to all six trigonometric function in the setting of right triangles. This tutorial begins with the six definitions and goes through applications involving angles of elevation and angles of depression. Includes several...
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Activity
Interactive Mathematics

Interactive Mathematics: The Right Triangle and Applications

For Students 9th - 10th Standards
Learn how to "solve" a right triangle and apply the concept to real world situations using angles of elevation and depression.
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Interactive
Curated OER

Zona Land: Right Triangle Solver 2

For Students 9th - 10th
A java applet that will solve a right triangle when you provide angle D and its adjacent side e.
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Interactive
Curated OER

Zona Land: Right Triangle Solver 3

For Students 9th - 10th Standards
A java applet that will solve a right triangle when you provide angle D and the length of the hypotenuse f.
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Interactive
Curated OER

Zona Land: Right Triangle Solver 4

For Students 9th - 10th Standards
A java applet that will solve a right triangle when you provide side lengths for d (long side) and e (short side).
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Interactive
Curated OER

Zona Land: Right Triangle Solver 5

For Students 9th - 10th
A java applet that will solve a right triangle when you provide the lengths of side e (short side) and side f (hypotenuse).
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Interactive
Curated OER

Zona Land: Right Triangle Solver 6

For Students 9th - 10th
A java applet that will solve a right triangle when you provide the lengths for side d (long side) and for side f (hypotenuse).
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Unit Plan
Khan Academy

Khan Academy: Solving for a Side in Right Triangles With Trigonometry

For Students 9th - 10th Standards
Learn how to use trig functions to find an unknown side length in a right triangle.