Education Technology

# Activities

• ##### Subject Area

• Math: Precalculus: Applications of Trigonometry

9-12

45 Minutes

• ##### Device
• TI-Nspire™
• TI-Nspire™ CAS
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.6

## Sinusoidal Modeling

#### Activity Overview

This lesson involves writing an equation to predict the average monthly temperature for a certain location based on past data.

#### Objectives

• Students will input data, plot the data, and use parameter sliders to fit a curve to model the data with a sinusoidal model.
• Students will use their knowledge of sine and cosine curves to write a sinusoidal equation to model the data.
• Students will interpret the parameters of a sinusoidal model in terms of the context of the physical setting.
• Students will make appropriate inferences about a physical setting based on a sinusoidal model.

#### Vocabulary

• amplitude
• frequency
• parameters
• period
• sinusoidal curve