Title of Activity 
Overview and Objectives 
Math Concepts 

PreTLC Technology Skills SelfAssessment and Algebra Content Assessment 
These assessments establish a participant’s current level of competence in the use of technology and algebraic content knowledge. 

Examining the Layout of the TI84 Plus 
This activity provides an opportunity to explore the layout of the TI84 and to perform basic operations 
 Order of operations
 Scientific notation

Onevariable Statistics 
This activity provides an opportunity to collect and analyze onevariable data. 
 Onevariable data
 Measures of central tendency
 Measures of variability
 Box plots
 Histograms

Pass the Ball 
In this activity, participants will collect data on the time it takes different numbers of people to pass a ball and use the data to make predictions. A scatter plot will be graphed and a line of best fit found for the data set. 
 Creating a scatter plot
 Finding a line of best fit
 Proportional relationship

Exploring the Coordinate Plane 
In this activity, participants will explore the coordinate plane by graphing a square using an xy line plot. 
 Entering ordered pairs in lists
 Coordinate graphing
 “Standard” window
 “Decimal” window

Picture Graphing – Transformations 
In this activity, participants will explore transformations in the coordinate plane by graphing a triangle using an xy line plot. 
 Entering ordered pairs in lists
 Coordinate graphing
 Transformations
 Reflections

Managing the Stat Editor 
This activity gives participants an overview of managing the Stat Editor including naming lists, clearing versus deleting lists, SetUpEditor, operations with lists, and sorting grouped lists. 

McCalories 
In this activity, participants will find the relationship between fat grams and calories from fat and between fat grams and total calories for various fast food items. 
 Representing data numerically and graphically
 Finding the equation of a line

Catch Me on the Rebound 
In this activity, participants will collect data by dropping a ball from various heights and recording bounce heights. The data will be analyzed and used to make predictions. 
 Finding a line of best fit
 Interpreting the meaning of the slope and yintercept
 Using a line of best fit for prediction

Memory Management on the TI84 Plus 
This activity features ways that memory can be managed on the TI84 Plus. This will include working with memory in RAM and archive memory. Participants will also learn about grouping files, lists, and variables for later retrieval. 

What Can Go Wrong and How to Fix It 
This activity examines possible problems that teachers may encounter when working with calculators. 

Recursion and Tables on the Home Screen 
In this activity, participants will use the recursive procedure on the home screen to numerically explore a savings account problem. 
 Number sense
 Recursion
 Patterns

Guess My Rule – Looking at Tables 
In this activity, participants will practice determining the rule for a function after seeing several ordered pairs. 

Guess My Rule – Looking at Graphs 
In this activity, participants will practice determining the rule for a function by matching graphs. 

Linear Activities with the CBR2TM Part One 
In this activity, the participants will use the TI84 Plus and the CBRTM or CBR2TM to graph and analyze motion data. 
 Interpreting distancetime graphs
 Comparing different types of motion to increasing, decreasing, and horizontal motion graphs
 Finding the slope of a distance versus time graph and interpreting that slope as velocity
 Interpreting the yintercept of a distance versus time graph as the starting point of the walker
 Predicting the effect of increasing or decreasing speed on a motion graph

Walk the Line: Straight Line Distance Graphs 
Participants will use the CBR™ or CBR2™ with the EasyData App to collect and analyze linear motion data 
 Interpreting distancetime graphs
 Finding the slope of a distance versus time graph and interpreting that slope as velocity
 Interpreting the yintercept of a distance versus time graph as the starting point of the walker

Match the Graph 
In this activity, participants will walk in front of a CBR2TM to match distance versus time graphs displayed on the calculator. 
 Interpreting distancetime graphs
 Comparing different types of motion to increasing, decreasing, and horizontal motion graphs
 Predicting the effect of increasing or decreasing speed on a motion graph

Topics in Algebra 1 Application: “Slope with Grid” 
In this activity, participants use the Topics in Algebra I App to explore slope. 
 Coordinate graphing
 Proportional reasoning
 Rate of Change
 Slope

Topics in Algebra 1 Application – Match It! 
In this activity, participants use the Topics in Algebra I App to explore the connections among linear functions, tables, and graphs. 
 Linear equations
 Tables
 Graphs

Linear Activities with the CBR2TM Part Two 
In this activity, participants will used the TI84 Plus and the CBR™ or CBR2™ to graph and analyze motion data 
 Interpreting distancetime graphs
 Computing the area “under” a velocity graph over a restricted domain to determine the distance traveled
 Comparing the area under a velocity graph to distance traveled

Walk this Way: Definition of Rate 
In this activity, participants will record distance versus time data for a person walking at a uniform rate, analyze the data to determine the slope and yintercept, and interpret the physical meaning of the slope and yintercept 
 Interpreting distancetime graphs
 Computing the area “under” a velocity graph over a restricted domain to determine the distance traveled
 Comparing the area under a velocity graph to distance traveled

TI ConnectTM QuickStart Guide 
This activity outlines the use of TI Connect™ computer software. 

Downloading and Installing Calculator Software Applications (Apps) 
This activity describes the process for downloading and installing Calculator Software Applications (Apps). 

Preparing Handouts 
This document provides tips and tricks for developing appropriate and effective handouts. 

Internet Exploration 
This document outlines the goals of an Internet exploration: Explore the education part of the Texas Instruments website, Locate and examine contentarea specific websites, Acquire research documents on working with the adult learner 

What’s the Voltage? 
This activity investigates the voltage of different numbers of batteries when the batteries are connected in series. 
 Linear function
 Proportional relationship

Equations of Lines 
In this activity, participants will use the Cabri?Jr 2.0 APP to make a direct link between the equation of a line, its graph, and the geometric properties of linear equations in the coordinate plane. 
 Coordinates in the Plane
 Slope of a Line
 Yintercept
 Equation of a Line
 Algebraic and Geometric connections
 Parallel Lines and Slope
 Perpendicular Lines and Slope
 Reasoning and Proof

Exploring Diameter and Circumference 
In this activity, participants will use the Cabri?Jr 2.0 APP to explore the relationship between the diameter and circumference of a circle. 
 Diameter
 Circumference
 Proportional relation

The Celsius to Fahrenheit Connection 
In this activity, participants will use the Calculator Based Laboratory (CBL2) and two temperature probes to collect temperature readings in degrees Celsius and degrees Fahrenheit. They will then develop the Celsius to Fahrenheit and Fahrenheit to Celsius conversion equations. 
 Units of Measure
 Finding a Line of Best Fit
 Inverse Functions

Strategies for Solving Linear and Absolute Value Equations and Inequalities 
In this activity, participants will explore numerical, algebraic, and graphical strategies for solving linear and absolute value equations and inequalities 
 Solving linear and absolute value equations and inequalities numerically, algebraically, and graphically

Transformations of Absolute Value Functions Using the Transformation Graphing Application 
In this activity, participants will use the Transformation Graphing Application to explore transformations of functions. 
 Transformations of absolute value functions

Parametrics and Linear Functions 
In this activity, participants will explore parametric equations of points and lines and simulate and solve motion problems graphically and numerically. 
 Representation of points and lines parametrically
 Modeling motion parametrically
 Interpreting speed in parametric motion graphs in dot mode
 Converting equations in Cartesian form to parametric form
 Solving motion problems algebraically and graphically

Maximizing Your Efforts 
In this activity, participants will use the Inequalities app to solve a linear programming problem related to manufacturing. 
 Defining variables
 Developing a system of inequalities to describe a problem situation
 Graphing and solving a system of inequalities

Paper Folding 
In this activity, participants will use paper folding to explore a “doubling” pattern and to find an exponential model for the paper folding data. 

Using Recursion for Exponential Functions 
In this activity, participants will use recursion on the Home Screen to model the height of a bouncing ball on successive bounces and to compare linear and exponential relationships. 
 Representing exponential functions recursively
 Comparing linear and exponential relationships

Double Your Pleasure 
Participants will collect and analyze population growth data and find the relationship between the "year" and the "population" of candies. 
 Exponential functions
 Data collection and analysis

Bounce Back: The Exponential Pattern of Rebound Heights 
In this activity, participants will use a CBR2TM to collect data on the height of a bouncing ball. The data will be analyzed to find the relationship between the height of the ball at different bounces and the bounce number. 
 Modeling data with an exponential function

Transformations of Exponential Functions 
In this activity, participants will use the TI84 Plus to explore transformations of exponential functions. 
 Characteristics of exponential functions
 Exploring transformations of exponential functions

Chill Out: How Hot Objects Cool 
In this activity, participants will collect temperature versus time cooling data and find an exponential model for the data. 
 Modeling data with an exponential function

Using the Finance Application for Compound Interest, Annuities, and Loans 
In this activity, participants will use the Finance Application on the TI84 Plus to calculate values and solve problems involving compound interest, annuities, and loans. 
 Calculating present and future values for compound interest, annuities and loans
 Finding total interest paid over the life of a loan
 Creating a balance of payments table

Count or Fit 
In this activity, participants will collect data on the number of diagonals in a polygon and find a quadratic model for the data. 
 Developing a quadratic function to model data
 Making connections between geometric formulas and algebraic functions
 Using finite differences to justify a quadratic model
 Using combinations

Transformations, Domain, and Range of Quadratic Functions 
In this activity, participants will explore transformations of quadratic functions and connect their algebraic and graphical representations. 
 Determining domain and range from a graph
 Describing the changes in the graph of a quadratic parent function when one or more parameters are changed
 Determining the equation of a quadratic function when transformations are described
 Completing the square to convert a quadratic function from standard form to vertex form

What Goes Up: Position and Time for a Cart on a Ramp 
In this activity, position and time data for a cart rolling up a ramp are collected and a parabolic model for position versus time is developed. 
 Quadratic functions
 xintercepts
 yintercepts

Zeros and Factors 
In this activity, participants will find real and complex zeros of quadratic functions algebraically, numerically, graphically, and by using the PolySmlt Application. They will check factors, make the connection between zeros and factors, and perform operations with complex numbers. 
 Finding real and complex zeros of quadratic functions
 Connecting zeros and functions
 Factoring quadratic expressions

Red Meat Consumption Continues to Drop 
In this activity, data on the annual per capita consumption of red meat and poultry for the years 1997 through 2001 are analyzed and used to make predictions. 
 Solving a system of equations graphically
 Developing scatter plots for two data sets
 Independent and dependent variables
 Identifying the bestfit models (linear and quadratic) for a scatter plot
 Making reasonable estimates and predictions

Don’t Fence Me In 
In this activity, participants will use numerical, graphical, and algebraic techniques to maximize the area of a rectangular garden with a fixed total length for three sides. Other similar problems will also be solved. 
 Solving application problems using linear and quadratic functions
 Fitting linear and quadratic regression equations to data
 Finding maximum function values numerically and graphically

Composition and Inverses Involving Quadratic Functions 
In this activity, participants will explore composite functions and inverse relations and functions. 
 Finding inverse functions and relations algebraically and graphically
 Exploring composition of functions, including domain and range
 Graphing a function with a restricted domain and graphically confirming its inverse
 Graphing inverses parametrically

Exploring Matrices 
In this activity, participants will enter matrices in the TI84 Plus and use the calculator to perform scalar multiplication and the addition, subtraction, and multiplication of matrices. Additionally, matrices will be used to solve systems of linear equations. 
 Matrices
 Operations with matrices
 Using matrices to solve systems of linear equations

Solving Systems with Matrices and PolySmlt 
In this activity, participants will use the TI84 Plus to solve systems with matrix operations. Additionally, systems of equations will be solved using the PolySmlt Application. 
 Solving a system of equations by using an inverse matrix
 Solving systems with a single matrix and reducedrow echelon form computation
 Solving systems using the PolySmlt Application

Eye Spy 
In this activity, participants will collect data on the distance from a wall a person must stand to view a certain height on the wall reflected in a mirror. The data will be analyzed to find the relationship between the height viewed on the wall and the person’s distance from the mirror. 
 Proportional reasoning
 Patterns
 Similar figures
 Rational functions

The Period of a Pendulum 
This activity investigates the relationship between the length of a pendulum and its period. 
 Periodic motion
 Period of a function
 Square root function

Swinging Ellipses with the CBR2TM 
In this activity, participants will use a motion detector to plot the motion of a swinging pendulum and develop an equation that models the pendulum's velocity versus position data. 
 Investigating the relationship between the velocity of a swinging pendulum and its position
 Developing a mathematical model for a data set
 Determining lengths of the major and minor axes of an ellipse
 Determining the center of an ellipse
 Writing the equation of an ellipse

Programming on the TI84 Plus 
This is a programming activity appropriate for Algebra teachers. 

PostTLC Technology Skills SelfAssessment and Algebra Content Assessment 
These assessments evaluate a participant’s growth in the use of technology and algebraic content knowledge. 
