Peer Review

Graphs of Trig Functions

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Overview:: This GeoGebra applet allows users to graph trigonometric functions and then explore how that graph is affected by changes to amplitude, frequency, and phase shift.
Type of Material:: Simulation
Recommended Uses:: In class demonstrations or activity, individual self-study, homework
Technical Requirements:: Any browser.
Identify Major Learning Goals:: The purpose of this site is to learn how changes to amplitude, phase shift, and frequency will affect the graphs of trigonometric functions. This site is very beneficial to pre-Calculus and Calculus I students.
Target Student Population:: College Lower Division
Prerequisite Knowledge or Skills:: College algebra, Trigonometry

Rating:
Strengths:: This is a great applet for graphing and manipulating the graphs of trigonometric functions. Users can easily type in one of the six trig functions. Then, using a slider, users can adjust the amplitude, frequency, and phase shift to see how the graph is affected. The function created by these adjustments is displayed under the sliders.
Concerns:: None

Rating:
Strengths:: This applet makes it very easy for users to explore graphs of trig functions. Displaying the function correlating to the adjustments made by the user is a nice touch. This applet could be easily shared with students in the LMS or used for in-class demonstrations
Concerns:: This site could be improved by adding or linking to a short summary or description of amplitude, frequency, and phase shift. This would reinforce what users see when manipulating the graph.

Rating:
Strengths:: This applet is very intuitive and easy to use. Students can choose from a variety of math tools that are available in this applet.
Concerns:: None