Introduction: TI-84 Training
Allow student to gain knowledge and familiarity of a TI-84 graphing calculator.
Supplies
TI-84 Graphing Calculator
Chromebook/Laptop
Step 1: Basic Keys
Work with the following commands on the face of the calculator.
- Add/Subtract/Multiply/Divide
- Square
- Logarithm
- Natural Logarithm
- Parenthesis
- Carrot Top
- Delete
Step 2: The 2nd Button
Work with the 2nd button to expand the face key commands. The 2nd button will open the blue commands that are posted above the face buttons. These include the following:
- Square Root
- Pi
- Imaginary Numbers
- Euler's Number e
- Ans
- Entry
- Insert
Step 3: The Mode Button
When entering in the Mode button, the ability to change back and forth form degree and radian mode is found. When knowing this the following face buttons are introduced:
- Sin
- Cos
- Tan
- Sin^-1
- Cos^-1
- Tan^-1
Step 4: Practice Face Buttons
Use the Chromebook or Laptop for a PowerPoint with examples to practice on the commands learned in Steps 1-3.
Step 5: The Math Menu
The first menu to work at and the most commonly used is the Math Menu. Within the menu the following commands will be shown:
- Changing Fractions to Decimals and back
- Cubing
- Roots larger than 2
- Logarithms not in base 10
- Summation
- Factorial and other Probability Commands
- Absolute Value
Step 6: The Matrix Menu
Another menu that will be shown is the Matrix Menu. Through this menu there are some commands that are not discussed in high school but there are a few, and the familiarity of the menu as a whole will be included. The main commands and operations that will use this menu and be discussed in this instruction are the following:
- Creating a Matrix
- Storing a Matrix
- Finding a Determinant
- Adding/Subtracting stored matrices
- Multiplying and Scalar Multiplication of stored matrices
Step 7: Practice With Menus
Use a Chromebook or Laptop for a PowerPoint to practice with steps 5 and 6.
Step 8: Create a Scatter Plot
To create the scatter plot the data will need to be placed in the lists that are found within the Stat Button, and under Edit option 1 and typing the data into L1 and L2. After the data is in Press 2nd and then Y=. Then follow the next steps to get the Scatter Plot to show:
- Select a Plot
- Turn it On
- Select the first type of graph
- Make sure Xlist is L1
- Make sure Ylist is L2
- Select any Mark
- Press Zoom (Middle button under screen)
- Select Option 9
Step 9: Find Line of Best Fit
With the data in the calculator, go into the Catalog to turn on diagnostic, this will allow the correlation factor to show on with the regression lines. Then go through the following Regressions within the Stat Button and in the Calc menu.
- Linear
- Quadratic
- Cubic
- Quartic
- Exponential
- Logarithmic
While going through these see which has a correlation "r" closer to 1 or -1. Once found, predict with the line of best fit.
Step 10: Practice With the Data
Use a Chromebook or Laptop to follow a PowerPoint to practice with Steps 8 and 9.
Step 11: Assessments
Work on three assessments.
- First: Steps 1-3
- Second: Steps 5-6
- Third: Steps 8-9