TIInterActive FileAdding Marbles
Collect data (Steps 1-3) due by ______________
Entire project due by ________________
Project counts as a test grade. 10 % will be deducted for each day the project is turned in late.
Turn in a disk (labeled with your name) and a print out of the project from a laser printer.
No two students can use the same data.
Pretend you are writing the project for your parents or the principal, someone who is not in this class. Express all your thoughts in complete sentences.
When you print your project, you may get a miniature table that contains your data. TI is still working on this problem. If it prints a small table, attach a handwritten copy of your data to your project.
Supplies
You will need a narrow container with straight sides partially filled with water (Crystal Light container), 50 marbles of the same size, and a centimeter ruler.
Instructions
1) Measure and record the water height before you add any marbles. Measure to the nearest .1 cm. Be sure to put your eyes at the level of the water before measuring.
2) Add 10 marbles at a time to the container. Measure and record the water height each time for 0, 10, 20, 30, and 40 marbles.
3) Measure the water height for 50 marbles. Do not use this ordered pair in your data until the end of the project. Save this ordered pair to determine how close the prediction comes to the actual data.
4) Calculate the approximate change in water height per marble.
5) Open TI Interactive.
6) Type the title of the project, today's date, the period of the class, and your name.
7) Describe how you collected the data.
8) Use TI Interactive to print your data into lists.
8a)Click on the List button(5th icon).
8b) Type the number of marbles into L1.
8c) Type height of the water into L2.
8d) Click on Save to Document button(1st icon).
8e) If you can't see both lists, click on the list and stretch or shrink the list horizontally or vertically so you can see all the data (nothing extra).
8f) With the cursor positioned at the end of the list, press Enter to create a new line.
9) Describe what L1 and L2 represent in complete sentences.
10) Use TI Interactive to graph a scatterplot of the data. Each graph must have a title, x axis labeled, and y axis labeled. Each graph must have an appropriate x min, x max, x scale, y min, y max, and y scale.
10a)On the TI Interactive! toolbar, locate the Graph button(3rd icon) and click the down arrow next to it. A group of buttons is displayed, representing the available graph types.
10b) Click the Scatter Plot button. The Functions editor is displayed along with a Graph window.
10c) Make sure that the Stats Plots tab is selected.
10d) In the uppermost text box, type L1 to specify it as the list containing the x coordinates.
10e) Press the Tab key to move to the second text box, and type L2 to specify it as the list containing the y coordinates.
10f) To change the color of the dots of the scatterplot, click on the color box and choose a color.
10g) To change the size of the dots of the scatterplot, click on the scatterplot box and to make the dots bigger, change the size to 3.
10h) If it is not already checked, click the check box at the left to select this plot. TI Interactive plots the data points in the Graph window. The points are not visible, however, because they are outside the default viewing boundaries of the Graph window.
10i) Click on Format button. Make sure that the window tab is selected. Enter an appropriate x min, x max, x scale, y min, y max, and y scale by using the tab key. For this project let x min = 0 and y min = 0. Click OK.
10j) Click on Format button again. Select the labels tab. Use the tab key to give the graph a title. Use the tab key to move over to the option of giving the x axis a title. (If there are units, put them in parenthesis.) Use the tab key to move over to the option of giving the y axis a title. For this project the y axis should be labeled Height of water (cm). Click OK.
10k) Click the Save to Document button to close the Graph window and insert the graph into the document.
11) Find an equation that closely fits the data by using the guess-test-revise method.
11a) Double click on the graph.
11b) Select the f(x) tab.
11c) Guess the equation that best fits the data. If you want to guess the equation y = x, type only x into the uppermost textbox. Click the check box at the left to graph the equation. Keep guessing until the equation closely fits all the data. Hint: what does the slope and the y intercept represent in this activity? This hint will enable you to guess the equation quickly.
11d) Click the Save to Document button to close the Graph window and insert the graph into the document.
12) Answer the following questions in complete sentences.
12a) State the equation of best fit. How did you find it?
12b) What is the slope? What are the units of the slope? What does the slope represent in this real world problem?
12c) What is the y intercept? What is the unit of the y intercept? What does the y intercept represent in this real world problem?
13) Use the equation to predict the height of the water if you added 50 marbles.
13a) State what you are going to do.
13b) Click on the math box button(1st icon). Type the equation of best fit,then the "when" symbol, then x=50. The "when" symbol is found above the enter and hold down the shift at the same time. (Example: y=2x+3|x=50). Click outside the math box to close it and then the answer will appear.
13c) Explain what you have just done.
13d) Compare the prediction to the actual height.
14) Give a brief statement evaluating the project. Assess the value of the project. Did you like it?
15) State and sign the Honor Policy. Put your signature in different font.
16) If possible, use a laser printer to print your project. Turn in a printout of the project and email me your project. The subject of the email must be the student's name and the title of the project. *7PPPPqP}PPPPhPP#P$P4APu P P
P!
P
P
}PBPDLP
P
P
P
P]P_PsPPP$PPPPPP
rP|PRPPPTimes New RomanTimes New RomanTimes New RomanIJpq01WXpq}~$%st#$KL5601lmA B `
a
}~rs}
~
`aLMhiQRTU"#XYd p@P !$`'Times New RomanTimes New RomanTimes New Roman00/=@{Gz?@