Lesson Plan
Curated OER

Sled Kites and Trigonometry

For Teachers 9th - 12th
Students study the history of kites and their fundamental properties.  In this kites lesson students divide into teams and build and fly kites. 
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...
Lesson Plan
EngageNY

Special Triangles and the Unit Circle

For Teachers 11th - 12th Standards
Calculate exact trigonometric values using the angles of special right triangles. Beginning with a review of the unit circle and trigonometric functions, class members use their knowledge of special right triangles to find the value...
Lesson Plan
Curated OER

Does Your Field Measure Up

For Teachers 9th - 11th
Young scholars measure angles using a plane table kit. In this geometry lesson, students use trigonometric identities to find the values of the length of a football field.
Lesson Plan
Curated OER

Finding the Area of an Equilateral Triangle

For Teachers 9th - 11th Standards
The problem seems simple: find the area of the equilateral triangle whose sides are each length 1. In fact, this same problem is solved in 8th grade, addressing a different Common Core standard, using the formula for area of a triangle...
Lesson Plan
Curated OER

Vector Lab

For Teachers 10th - 12th
Here is a math lab that helps young mathematicians understand the real-life meaning for vector addition. By building a model using spring scales and washers as weight, and then calculating the vector addition using two different methods,...
Worksheet
Curated OER

Trigonometric Functions

For Students 9th - 12th Standards
Here is a worksheet that includes three short trigonometry problems. Learners must use trigonometric definitions and identities to solve. Use this resource to review trigonometry, or as an assessment.
Worksheet
Curated OER

Circular Trigonometric Functions

For Students 11th - 12th
In this Pre-calculus/Trigonometry worksheet, students estimate the amplitude, period, and horizontal and vertical translations of a graph and find a rule that models the data. The three page worksheet contains fourteen problems. Answers...
Unit Plan
Virginia Tech

Unit Plan: Exponential and Logarithmic Functions

For Teachers 10th - 12th Standards
A six-day unit for algebra II on exponential and logarithmic functions builds upon Chapter 12 of Merrill Algebra II with Trigonometry; Applications and Connections. The text provides assistance in the depth of instruction...
Assessment
Mathed Up!

Sine and Cosine Rules and Area of Triangles

For Students 9th - 12th
Learners discover how to find missing sides and angles using trigonometry. Scholars first watch a video covering the Law of Sines and Cosines, as well as the area formula for a triangle. To test their knowledge, they complete a worksheet...
Lesson Plan
Curated OER

Trig Transformations

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

Trigonometric Applications Outside the Classroom

For Teachers 5th
Fifth graders describe and demonstrate how trigonometry can be used to find the height of a tall building or tree. They describe and demonstrate how trigonometry can be used to find the height of a high hill, or other high object where...
Lesson Plan
Curated OER

The Law of Sines

For Teachers 11th - 12th
Learners define the laws of sine as it relates to a right triangle. In this trigonometry activity, students identify the properties of sine to help then find mixing sides of a right triangle. They also solve for the missing angles.
Lesson Plan
Curated OER

Geometry Exploration Basic Trig Functions

For Teachers 10th
Tenth graders solve for missing sides on a triangle using the Pythagorean Theorem. In this geometry lesson, 10th graders are introduced to basic trigonometry functions as they solve problems of right triangles. They discuss the...
Worksheet
1
1
Curated OER

Arithmetic or Geometric Series

For Students 11th
In this Algebra II/Trigonometry worksheet, 11th graders evaluate arithmetic and geometric series.  The two page worksheet contains ten multiple-choice problems.  Answers provided. 
Lesson Plan
Texas Instruments

REAL LIFE REAL WORLD Activity - Surveyor

For Teachers 9th - 12th Standards
Learners investigate surveying in this secondary mathematics lesson. They will explore a real world application of geometry and trigonometry as they create a plot plan using a geometry utility and calculate the area of the land parcel.
Worksheet
Curated OER

Trigonometry: Circles and Angles

For Students 11th - Higher Ed
In this circle and angel worksheet, students identify angles that correspond to a point on the unit circle. They give their solution in both degrees and radians. This two-page worksheet contains 20 problems.
Lesson Plan
Curated OER

Algebra 2/Trigonometry Regents Exam

For Teachers 11th - 12th
Young scholars review for the Regents Exam. In this math instructional activity, students review core concept for the Regents exam by working a variety of problems. A printable worksheet is provided.
Worksheet
Curated OER

Trigonometry Multiple Choice

For Students 9th - 10th
In this geometry learning exercise, students solve word problems. They find the height and distance of triangular measurements. They identify missing angles using triangular properties. There are 10 questions.
Worksheet
Curated OER

Trigonometry Worksheet: Verify Identities (2)

For Students 10th - 12th
In this sine and cosine identities worksheet, students verify the identities of two problems.
Worksheet
Curated OER

Trigonometry Worksheet: Verify Identities (4)

For Students 10th - 12th
Students verify the identities in one equation. In this trigometric identities worksheet, students verify the identity in one trigometric equation.
Lesson Plan
Curated OER

The Distance to an Unapproachable Point

For Teachers 8th - 11th
Learners use geometry or trigonometry to measure the distance of a far off point. They verify their measurements using a tape measure to check their work.
Lesson Plan
Curated OER

Measuring The Earth

For Teachers 9th - 12th
Students use their geometry and trigonometry skills to determine the distance between their school and another school.
Worksheet
Curated OER

Sin x = x/100

For Students 11th - 12th
In this trigonometry worksheet students determine the number of solutions for the problem sin x = x/100.  The one page worksheet contains one problem with solution. 

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