User manual ARIANE TEC SCHEMA

[. . . ] McNay teacher, Quincy Junior High School, Quincy, Illinois Melissa Nast teacher, Arlington, Texas Louise Nutzman teacher, Sugar Land Middle School, Sugar Land, Texas Aletha Paskett teacher, Indian Hills Middle School, Sandy, Utah Claudia Schmitt teacher, Oquirrh Elementary School, West Jordan, Utah Karen Wilcox teacher, Columbus, Ohio Important notice regarding book materials Texas Instruments makes no warranty, either expressed or implied, including but not limited to any implied warranties of merchantability and fitness for a particular purpose, regarding any programs or book materials and makes such materials available solely on an “as-is” basis. In no event shall Texas Instruments be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of these materials, and the sole and exclusive liability of Texas Instruments, regardless of the form of action, shall not exceed the purchase price of this book. Moreover, Texas Instruments shall not be liable for any claim of any kind whatsoever against the use of these materials by any other party. Permission is hereby granted to teachers to reprint or photocopy in classroom, workshop, or seminar quantities the pages or sheets in this work that carry a Texas Instruments copyright notice. [. . . ] ♦ Have students draw and label the x- and y-axes on their papers. Ask: How do I graph (2, 5), (5, 2), (-2, 5), (5, -2), (2, -5), (-5, 2), (-5, -2)? © 1998 ARIANE INCORPORATED 36 Using the TEC: A Guide for Teachers Geometry Activity Have students perform the steps unless otherwise indicated. On the transparency of the dolphin picture, label the xand y-axes using whole numbers. Lead the class in a discussion of selecting the first few key points to make a dot-to-dot outline of the dolphin. Depending on the level of your students, these points may be at whole number values, integral values, or fractional values. Have students work with partners to complete the dotto-dot outline of the dolphin. (select points closer together, use fractional or decimal values for coordinates) 4. On the transparency, label the points in alphabetical order and as ordered pairs counter-clockwise around the outline of the dolphin. Using the TEC, enter the x-coordinates of the dolphin outline into L1 and the y-coordinates of the dolphin outline into L2. (You’ll get an error if L1 is still highlighted. ) Press b after each list item. Now follow the same procedure and enter the y-coordinates in L2. for closed Á Remember, firstapoint’s figure, the coordinates need to be reentered as the last point, also. Á Depending on the level of your students, the dolphin may be in the first quadrant only or it may be in more than one quadrant. Á It is critical that students enter the pairs of numbers in the proper order, because the order entered is the order in which they are plotted. Measure the volume of the water collected in the 10-minute period. a faucet is not Á If large containeravailable, a with a small hole can be used (plastic gallon milk jug, large can, etc. ). Leave the lid on the container to get a drip rather than a steady stream of water. © 1998 ARIANE INCORPORATED 42 Using the TEC: A Guide for Teachers Measurement and Geometry 7. Counting for 3 or 4 minutes might give a more accurate average per minute, but it might be too long for your students. ) Could you calculate the volume of each drop?(volume of water / number of drops) How much water would be collected in 1 hour?Use the above questions to have students help you develop the formula for the following situation. Since the amount of water that would be collected changes with the number of hours you are collecting it, you could write an equation to describe this occurrence. The volume of water equals the amount of water that would be collected in 1 hour times the number of hours. Example If your calculation were two cups of water per hour, your equation would be Y = 2X (Z I). (See screen at the right. ) may help Á A T-chart see the change. students Á The TEC displays theas an multiplication symbol asterisk ¦. 10. (For more information about the viewing window, see “Setting the Window Format” and “Defining Window Values” in the Function Graphing chapter of the TEC Guidebook . ) by the TI@X Á 73, is determinedwhat you depending on entered for Xmin and Xmax. © 1998 ARIANE INCORPORATED Measurement and Geometry Activity 8: Drip, Drip, Drip 43 11. [. . . ] Choose your scale based on the largest number in your data list, or you can select ( 7:ZoomStat and the TEC will select a scale for you. The largest data number divided by the scale must be less than or equal to 7. For example, if the largest data number is 21 then chose a scale of 3 because 21/3  7. 11. (If you have TEC TI-GRAPH LINKé, students may print their graphs to color and label. ) 14. [. . . ]