Activity Overview
Students will determine the rate of change (slope) & build a linear model (y = mx + b) from this data. The model will be used to make a prediction about the future growth of the population of the U.S. if the current trend continues.
Before the Activity
If you are using the TI-Navigator System™ with the TI-73 Explorer™ you will need the attached .pdf file.
See the attached Teacher Edition PDF file for notes and guidelines for this activity. The Technology Guide PDF file includes step-by-step calculator instructions with screen shots.
If you are using the TI-Navigator™ Classroom Learning System, see the TI-Navigator Basic Skills Guide PDF file for information on how the system can be integrated into your activity.
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 substitution to predict and answer using the linear regression model.
Use the appropriate labels with numerical values for the rate of change.
Create a scatter plot of the data.
Directions:
Distribute the Student Edition PDF file to your class.
Follow the activity procedures outlined in the student document.
You may use the Transparency PDF file to display a large image of the USA TODAY graphic during the activity.
After the Activity
Distribute the assessment questions or send the attached LearningCheck™ assessment to your class to gauge student understanding of the concepts presented in the activity.