Education Technology

Activities

• Subject Area

• Math: Mathematical Modeling: Ratings

6-8
9-12

50 Minutes

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

TI-Nspire™ CX CAS
TI-Nspire™ CX

5.0

Modeling Judging a Poster Contest

Activity Overview

In this TI-Nspire family activity, students use the ratings made by five judges in a poster competition with the goal of deciding the top three posters based on the ratings made by the judges.

Objectives

Students will be able to:

• Model a contextual situation mathematically and use the model to answer a question.
• Create equations in two or more variables to represent relationships between quantities.
• Summarize and compare data sets using measures of center and variability

About the Lesson

The activity can be used with middle and introductory algebra students, and lends itself to a group project. The activity could be a precursor to a more extensive activity on investigating voting methods for students in geometry or second year algebra. The analysis can be connected to statistical summaries for center and variability and possibly to z-scores, as a way to normalize the ratings of the different judges.