Name 
Description 
Ferris Wheel  This lesson is intended to help you assess how well students are able to: Model a periodic situation, the height of a person on a Ferris wheel, using trigonometric functions.
 Interpret the constants a, b, c in the formula h = a + b cos ct in terms of the physical situation, where h is the height of the person above the ground and t is the elapsed time.

Tune In and Sine  This lesson is intended to show students how to use the equations and graphs of sine and cosine to model realworld applications particularly using amplitude, period, and midline. 
Sine Curves and Biorhythms  This is an activity in which students find their personal biorhythms using sine functions. Biorhythms are 3 cycles (physical, emotional, and intellectual) thought to affect our behavior and performance. The biorhythms have 3 different period lengths. Students need to compute the number of days they have lived to find where they are in these cycles. Students find the equations of the functions and then graph on a graphing calculator. 
Calculating the EarthSun distance using Satellite Observations of a Venus Transit  Every school child learns that the earthsun distance is 93 million miles. Yet, determining this distance was a formidable challenge to the best scientists and mathematicians of the 18th and 19th centuries. The purpose of this lesson is to use the 2012 Transit of Venus as an opportunity to work through the mathematics to calculate the earthsun distance. The only tools needed are basic knowledge of geometry, algebra, and trigonometry. The lesson is selfcontained in that it includes all the data needed to work through the exercise. 
City Temperatures and the Cosine Curve  Students will work with temperature data from San Antonio, Texas and Buenos Aires, Argentina. They will view the periodicity of the city temperatures and build cosine functions to fit the data. The function equation results are then used to find temperatures for a given day, or certain days for a given temperature. 