# Average Temperature

### Average Temperature Lesson Plan Algebra 1 Level

Objective:The student will manipulate data gathered using temperature probe to compare the temperature of cold water, hot water, and the combination of both.

Engage: Discuss with students the procedures involved in manipulating data in the CFX-9850G.
Discuss procedures for averaging.

Explore:
Students will take data and enter it into the List mode. Have students copy data from list to list simultaneously. Have students find average value for any single list of data.

Explain: Compare student results.
Review correct procedures and answer questions.

Elaborate: Complete activity using the EA-100 and CFX-9850G.

Equipment
1 empty cup
2 cups of water 1 hot (not boiling) and 1 cold (no ice)
2 EA-100s
CFX-9850G
2 temperature probes
stopwatch/ timer/ alarm
data communication cable
1. Perform the experiment as follows:
• Perform the experiment as follows:
• Attach one temperature probe in CH1 of each EA-100
• Place one probe into each cup of water
• To operate the EA-100 manually, use the following keystrokes.
```KEYSTROKE 			EXPLANATION
a.  Press[SHIFT][MODE]	"Set-up"
b.  Press [DATALOG] until "5 Sec" appears	"Next"  Press [DATALOG] several
times until the sample time you want
appears (5 Sec)
c.  Press[TRIGGER]	Chooses the 5 Sec as the time
d.  Press[DATALOG] until "20" appears	Press [DATALOG] several times until
the number of sample points you want
appears (20)
e.   Press[TRIGGER]	Chooses 20 as the number of samples
f.    Press [DATALOG] until 2 appears	"Next" Press [DATALOG] until you see
the time consideration you want.  In this
case, the time will be collected as data.
g.   Press[TRIGGER]	Selects time consideration.
h.   Press[TRIGGER]	Begins sampling.  This means that the EA-100 will begin collecting data every 5 seconds until 20 data points have been collected.

Press TRIGGER on the EA-100
Sampling is completed when the EA-100 displays DONE.

```
2. Retrieve the data from the EA-100:
a. Connect EA-100 to CFX-9850G using the data communication link.
b. Turn on CFX-9850G and choose Run (1) from the menu.
c. Press SHIFT VARS {PRGM}
d. Press F6 (>) , then I/O {F4}
e. Press Recu (F4) {Receive( }
f. Press OPTN, List {F1}, List {F1} ,1, close Parenthesis { ) }
g. Press SHIFT EXE {¿ }
h. Press Recu (F4) {Receive( }
i. Press OPTN, List {F1}, List {F1} ,2, close Parenthesis { ) }
j. Press EXE
3. The data should now be listed in List 1 and List 2
.
4. Go to the Main Menu and choose List (4)
a. Cursor across the top of the screen, highlighting List 5
b. Press OPTN , List {F1}, List {F1}, 1 , EXE This will copy the data in List 1 to List 5.
c. Cursor across the top of the screen, highlighting List 6
d. Press OPTN , List {F1}, List {F1}, 2 , EXE This will copy the data in List 2 to List 6.
5. Repeat Step 2- ONLY. This will enter the data from the second EA-100 to List 1 and List 2.
6. Go to the Main Menu and choose List (4)
k. Cursor across the top of the screen, highlighting List 3
l. Press OPTN , List {F1}, List {F1}, 1 , EXE This will copy the data in List 1 to List 3.
m. Cursor across the top of the screen, highlighting List 4
n. Press OPTN , List {F1}, List {F1}, 2 , EXE This will copy the data in List 2 to List 4.
7. Now data is stored in Lists 3 - 6.
8. Put one probe into the empty cup
9. Pour the hot and cold water into the empty cup.
10. Repeat procedure for manually collecting and retrieving data with the EA-100 and CFX-9850G.

Evaluate: For the next part of the procedure you will be operating in the LIST menu. Have students find the average temperature for each list of data (List 2,List 4, List 6.) Compare answers with other classmates. Discuss the results as a class. Further evaluation could include finding averages of other types of data.

Developed by:
Maxine Edwards and Mary Teal
Butler High School Matthews, NC