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- Angle Sums - Examine the angles in a triangle, quadrilateral, pentagon, hexagon, heptagon or octagon.
- Determining Functions Using Regression - This activity allows students to look for functions within a given set of data. After analyzing the data, students should be able to determine what type of function best represents the data.
- Discovering Trigonometry- Frequently asked questions about Trig.
- Follow That Graph - Help your students to follow that graph with ease. In this lesson, students investigate, analyze, and discuss the effects of parameter changes on a trigonometric function using a graphing calculator.
- Fractions & Line Graphs - Students will be able to understand, represent, and use numbers in a variety of equivalent forms.
- Mars Orbit - Astronomers now know that the planets in our solar system travel around the Sun in roughly circular orbits. However, people used to believe that the Sun and other planets orbited the Earth.

- Right Triangle Trigonometry- Students will find values of trigonometric functions and apply them to solve right-triangle problems.
- Seismic Waves- This example is about seismic waves.
- SSA Construction- In this activity students will use Geometer's Sketchpad, Cabri Geometry or the TI-92 to construct the SSA Ambiguous Case to demonstrate the possible number of triangles which can be constructed based on the length of the third side.
- The EUVE Orbit- The students will study the nature of a satellite's orbit around the Earth.
- The Sine Function- To familiarize the students with the concept of the sine function by defining, by graphing, by computer generating, by using a "shop created" blackboard sine wave generator, and by presenting examples of natural phenomena which result in sine wave motion.
- Trigonometric Functions- To define and demonstrate the six trigonometric functions.
- Trigonometric Functions - My students will know how to find the sine, cosine, and tangent of right triangles using the sides of the triangle.
- Trigonometry- Shows visuals of basic functions.
- Trigonometry Lessons- A variety of lessons and quizzes by Joe Mercer.
- Trigonometry for Solving Problems - This lesson offers a pair of puzzles to enforce the skills of identifying equivalent trigonometric expressions. Additional worksheets enhance students' abilities to appreciate and use trigonometry as a tool in problem solving.
- Trigonometric Graphing - Explore the amplitude, period, and phase shift by examining the graphs of various trigonometric functions. Students can select values to use within the function to explore the resulting changes in the graph.