Class will begin with the review of the unit circle and its application to trigonometry. The focus will be on trigonometric functions of angles with irrational numbers that appear frequently in evaluating trigonometric functions.

http://www.teacherwebquest.com/WQ/HighSchool/Trigonometry3/h6.stm

This activity provides an opportunity for students to use their knowledge of the unit circle as they discover the measures of commonly used angles in trigonometry.

Note: The students will be divided into groups of four for this task. Teacher will lead them through the activity, beginning with the introduction through the evaluation.

2. Next, graphs and periodicity will be explored. Students will review the use of the graphing calculator. It will be noted that attention to the mode is relevant.

Using the TI-83/84 Graphing Calculator

http://www.prenhall.com/divisions/esm/app/graphing/ti83/

Title: Calculator tutorial

Annotation: The students in this class come from many backgrounds. This website allows them to review the graphing calculator at their own pace and at the level of their knowledge.

Note: Students will select "Algebra, Trig, Calculus". Then select Trigonometry #8. Students will model exercises included in boxes.

3. Finally, the lesson extends the review of trigonometric functions by applying the problem-solving strategy Making a Table to graph them in the coordinate plane. Students will review the graph of the sine and cosine graph over the interval o < x < 2 π. Students will generate a set of values for (x, sin x) or for (x, cos x) and plot them on a coordinate system.

Using the TI-83/84 Graphing Calculator

URL : http://www.prenhall.com/divisions/esm/app/graphing/ti83/

Annotation : From the banner page, students will select "How to graph a function". Then select "Trigonometric Function". Students will model exercises included in boxes.