Now You See It, Now You Don't - TI-83

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Algebra I: Exponential Functions

Math: Statistics: Inferential Statistics

Level

9-12

Activity Time

60 Minutes

TI Calculator

TI-84 series

Other Materials

Metric ruler (meter stick)
String of length: 1.5 meters
Eye test sheets with letters

Resource Types

Lessons

Report an Issue

Now You See It, Now You Don't - TI-83

Activity Overview

In this activity, students study the relationship between age and near point accommodation (NPA). They predict a person's age using NPA distance values. They use exponential regression, create box-and-whisker plots and histograms.

Before the Activity

Set up the calculator for data collection using the procedure described in the attached Appendix PDF file

See the attached PDF file for detailed instructions for this activity

Print pages 87 - 96 from the attached PDF file for your class

During the Activity

Distribute the pages to your class.

Follow the Activity procedures:

Measure the closest distance between the eye and the paper when the letter on the paper remains in focus (NPA)

Record the age, and the distance between the eye and the paper

Repeat the procedure with 4 different subjects

Enter the age and NPA data as lists

Group the data for different age groups

Create a box-and-whisker plot to analyze the data

Use the graph of the exponential regression to determine the person's age based on his NPA distance

After the Activity

Students will complete the Data Collection and Analysis page and answer questions listed on it.

Review student results:

As a class, discuss questions that appeared to be more challenging

Re-teach concepts as necessary

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes Appendix PDF Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Algebra I: Exponential Functions

Math: Statistics: Inferential Statistics

Level

9-12

Activity Time

60 Minutes

TI Calculator

TI-84 series

Other Materials

Metric ruler (meter stick)
String of length: 1.5 meters
Eye test sheets with letters

Resource Types

Lessons

Report an Issue

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Now You See It, Now You Don't - TI-83

Now You See It, Now You Don't - TI-83

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