Education Technology

Math TODAY for TI-Navigator System - Cropland Value Grows

Activity Overview

Students will create a scatter plot for the data in the USA TODAY Snapshot, "Cropland value grows" and identify the independent and dependent variables for the data. The students will find the rate of change for the data and label this value with appropriate units. Students will determine a linear model to fit the data and then use this model to make predictions.

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:

  • Find the rate of change (slope) for a given set of data
  • Determine a linear regression model from data
  • Use the regression model to make predictions
  • Use appropriate labels for the rate of change
  • Create a scatter plot for the data

  • Directions
  • 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.