Texas Instruments TI-73 57

Using the TI-73: A Guide for Teachers

Measurement

9.Before graphing, set up the viewing window for each TI-73 (').

∙Xmin will be 0.

∙Xmax will be the height of the ramp straight up plus 5 (so you can see the full graph).

∙Ymin will be 0.

∙Ymax will be the longest distance a car traveled plus 5.

For more information, see “Setting the Window Format” and “Defining Window Values” in the Function Graphing chapter of the TI-73 Guidebook .

10.Display the graph and discuss the data. Have students compare this graph to the graph they made on their activity sheets.

* )

$ and # to view data

➪The Xmax and Ymax values shown here are just

examples.

Wrap-up

♦Combine class data and calculate the mean for each height using an overhead calculator. Do this on the Home screen of the TI-73 using traditional methods.

♦Graph the class data on the overhead and compare the class graph to the individual group graphs.

Assessment Suggestions

Discuss as a class or have students write in their journals: What is similar in all the graphs?

Are there differences? What could have caused these differences?

Would a shorter or longer ramp affect the data?

Would a smaller or larger car affect the data? How?

Extension

Test the affect of varying the ramp length, car size or weight, or floor.