Education Technology

Math TODAY for TI-Navigator System - More Students Apply Early

Activity Overview

Using the USA TODAY Infograph, "More students apply early," students will explore scatter plots and independent and dependent variables. Students will determine a best-fit regression model for the real-life data set and then use the model to make a prediction. The meaning of slope (rate of change) and y-intercept will be explored in the context of the problem. Students will find the mean value of the number of students applying under the early decision plan.

Before the Activity

Setup your TI-Navigator System

  • Make sure you are familiar with the following functions: Send to Class, Collect from Class, Screen Capture, Quick Poll and Activity Center

  • Your students will need a TI-83 Plus or TI-84 Plus graphing calculator, either working in pairs or individually
  • Download the attached activity resource files from all three sections to your computer

  • Multimedia Projector for sharing the Activity Center, Quick Polls and Screen Captures with your students

  • TI Keyboards for students to easily answer the LearningCheck™ assessment questions

  • During the Activity

    Students will:

  • Create a scatter plot of a data set using appropriate values for the independent and dependent variables
  • Explore the linear model for a data set and explain what slope and y-intercept mean
  • Find the mean (average) value for a data set

  • Distribute the Student Edition PDF file to your class
  • Follow the activity procedures outlined in the Teacher document
  • You may use the Graphic PDF file to display a large image of the USA TODAY graphic during the activity

  • After the Activity

    Access your students' understanding by using Send to Class, LearningCheck™ App and Class Analysis.