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Lesson Plan
EngageNY

Equations for Tangent Lines to Circles

For Teachers 9th - 12th Standards
Don't go off on a tangent while writing equations of tangent lines! Scholars determine the equations for tangent lines to circles. They attempt both concrete and abstract examples, such as a tangent line to the unit circle through (p, 0).
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Interactive
CK-12 Foundation

Radian Measure: Unit Circle Conversions

For Students 10th - 12th
Individuals investigate the relationship between radian and angle measurements by using an interactive to find the angle measurement for given radian measures. Users answer questions to convert between the two measurements.
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Interactive
CK-12 Foundation

Reference Angles and Angles in the Unit Circle: Exploring Reference Angles

For Students 10th - 12th Standards
A steal of a deal — get four angles for the value of one. An interactive resource allows individuals to visualize all four angles that have the same reference angle. Pupils answer questions by using the interactive to create the...
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Instructional Video25:49
2
2
Flipped Math

Unit Circle and Radians

For Students 9th - 12th Standards
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...
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Activity
Illustrative Mathematics

Tangent to a Circle From a Point

For Teachers 9th - 10th Standards
Learners see application of construction techniques in a short but sophisticated problem. Combining the properties of inscribed triangles with tangent lines and radii makes a nice bridge between units, a way of using information about...
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Handout
2
2
Curated OER

Trig Cheat Sheet

For Teachers 10th - 12th Standards
Your pre-calculus learners will make use of this wonderful cheat sheet that summarizes all things trigonometric. Definitions based on both the unit circle and the right triangle are included, as well as many convenient trigonometric...
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Worksheet
Curated OER

Which Unit of Measure

For Students 1st - 2nd Standards
Would you use inches or miles to measure a finger? How would you measure the water in a pool, or milk in a carton? Reinforce units of measurement with your first grade class. Learners circle the correct unit of measurement for each...
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Lesson Plan
Texas Instruments

Drawing a Line Tangent to a Circle

For Teachers 9th - 12th Standards
Explore lines tangent to a circle. In this math lesson, students manipulate circles and lines on a TI calculator. They draw a circle  and analyze perpendicular lines intersecting the circle in only one place. This activity works best if...
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Worksheet
Curated OER

Unit VIII Worksheet 5: Circular Motion

For Students 9th - 12th
Seven problems send physics stars out of this world! Challenge learners to calculate centripetal force, time to complete revolutions, circular speed, and acceleration. They also are asked to explain scenarios and draw a force diagram for...
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Lesson Plan
Curated OER

Area of Circles and Probability

For Teachers 8th - 12th
Students investigate the area of squares and circles. For this geometry lesson, students calculate the area and probability of simple events. They work on a laptop using Safari.
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Worksheet
Curated OER

Unit VIII: Worksheet 2 - Centripetal Force

For Students 9th - 12th
Circular motion can make you loopy! On this physics worksheet, learners practice solving problems regarding centripetal force, rotational period, speed, acceleration, and more. A flying aerobat and a couple of amusement park rides make...
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Activity
101 Questions

Suitcase Circle

For Teachers 9th - 12th Standards
Analyze patterns in a circular arrangement. After using a geometric construction to complete a circle, learners use proportional reasoning to make predictions. By determining the length of an arc built from suitcases, they estimate the...
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Interactive
CK-12 Foundation

Circles Centered at the Origin: The Map of the Beta Solar System

For Students 11th - Higher Ed Standards
Calculate galactic orbits in a far-out resource. Pupils drag a point on a circle to graph the orbit of a fictional planet. Using the equation, they find points through which the orbit passes. To finish the simulation, users determine the...
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Lesson Plan
EngageNY

Awkward! Who Chose the Number 360, Anyway?

For Students 10th - 12th Standards
Don't give your classes the third degree. Use radians instead! While working with degrees, learners find that they are not efficient and explore radians as an alternative. They convert between the two measures and use radians with the...
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Lesson Plan
EngageNY

Close Reading of Bullfrog at Magnolia Circle: Main Ideas about the Bullfrog

For Teachers 3rd Standards
As your class reaches the end of the book Bullfrog at Magnolia Circle, the seventh lesson in this literary unit helps third graders transition from reading narrative to expository writing. Scholars develop their note-taking skills as...
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Lesson Plan
EngageNY

Mid-Unit Assessment: Close Reading of Bullfrog at Magnolia Circle: Bullfrog Life Cycle

For Teachers 3rd Standards
The sixth lesson plan in this Bullfrog at Magnolia Circle unit assesses your third graders' ability to read and understand informational text. The included assessment asks learners to take notes about the main idea and supporting details...
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Lesson Plan
EngageNY

Close Reading of Bullfrog at Magnolia Circle: Text-Dependent Questions, Main Ideas, and Key Vocabulary about the Bullfrog

For Teachers 3rd Standards
As your 3rd grade class finishes reading Bullfrog at Magnolia Circle, the eighth lesson plan of this unit helps readers from an understanding of the very specific information on the final page of the book. As with the entire unit,...
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Lesson Plan
EngageNY

Continued Close Reading of Bullfrog at Magnolia Circle: Text-Dependent Questions and Vivid Words and Phrases

For Teachers 3rd Standards
As 3rd graders continue reading Bullfrog at Magnolia Circle, they focus on the concepts of predator and prey in the fifth lesson plan of this unit. Scholars further develop their ability to answer questions using evidence from the text...
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Lesson Plan
EngageNY

Continued Close Reading of Bullfrog at Magnolia Circle: Text-Dependent Questions and Vivid Words and Phrases

For Teachers 3rd Standards
In the third activity from this unit based on the book Bullfrog at Magnolia Circle, learners focus on using specific details from the text-to-answer questions about the habitat of bullfrogs. While reading the text, young scholars are...
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Handout
1
1
Curated OER

Math Handbook: Trigonometry

For Students 9th - 12th Standards
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. 
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Lesson Plan
1
1
Curated OER

The Unit Circle

For Teachers 9th - 11th Standards
Students 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

Unit Circle and Triangle

For Teachers 9th - 11th
Students apply the Unit Circle to solve ratios of triangles. In this geometry activity, students derive the different ratios of a triangle using the Pythagorean Theorem. They find the angles of a unit circle using a right triangle.
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Lesson Plan
Curated OER

Unit Circle

For Teachers 10th - 12th
Students investigate the different properties of a unit circle. In this geometry lesson, students identify the six different values of trigonometric functions. They solve trigonometric equations using values derived from the unit circle.
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Lesson Plan
Curated OER

Right Triangles and Unit Circles

For Teachers 9th - 11th
Pupils evaluate the six trigonometric values of a trig function. In this trigonometry lesson, students use the Unit Circle to find the values of right triangles and their angles. They identify an angle of elevation and depression.

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