Lesson Plans and Worksheets
Browse by Subject
Tangents Teacher Resources
Find Tangents educational ideas and activities
This detailed lesson plan leads your students through an investigation of the relationships between central, inscribed, and circumscribed angles of a circle. The opening activity reviews central and inscribed angles and their intercepted arcs by having learners create problems for a partner to solve. After discussing their solutions, learners work in small groups to complete a worksheet that contains five diagrams showing circles with angles formed by radii, chords, diameters, secants, and tangents. Referring to a list of possible description options, pupils determine the exact figures that form each angle, measure the angle with a protractor, then interpret the result in relation to the measures of the central angle and intercepted arcs.
This is a multi-faced unit that looks at circles, arcs, sectors, cylinders, cones, spheres, and hemispheres. The formulas for finding length, area, surface area, and volume are discussed with an eye towards an intuitive understanding. Vocabulary is also stressed. This unit is organized to easily use only the parts you need.
Students explore the concept of geometry. In this geometry lesson, students practice problems from the geometry regents exam. Students answer practice problems that are multiple choice. Students answer questions involving angle measures, parallel lines, shapes, congruent figures, circles, perpendicular lines, etc.
In this tangents, secants and chords instructional activity, 10th graders identify and solve 48 different problems that include using 3 different theorems for defining circles. First, they determine the area of each circle with C as the center and a given tangent line. Then, students determine the lengths of the given line segments.
Students study the concept of tangent of a unit circle. In this unit circle lesson plan, students explore the mathematical history of the trigonometric ration, tangent, through an interactive date-gathering construction that simulates an experience that mirrors how values of trig functions may have been approximated.
Learners use Geometer's Sketchpad or Patty Paper Geometry to explore and write conjectures about chords, tangents, arcs and angles. In this geometric conjecture lesson, students examine what a conjecture is as it relates to geometric properties. Learners explore central angles and inscribed angles while writing conjectures about the relationship between the measure of these angles.
Young scholars explore the concept of the unit circle. In this unit circle lesson, students create a scatter plot of the sine, cosine, and tangent function using data from the x and y values on the unit circle. Young scholars generalize the tangent, sine, and cosine relationships.
Students identify different locations on a unit circle. In this precalculus instructional activity, students identify the different trig properties and rewrite the equation of a circle in standard form. They use mnemonic devices to help them remember the different ratios of trigonometry.