• Students should know how to find slope and write an equation given two points.

• Use a spreadsheet to do multiple calculations with formulas associated with linear equations to find new values.
• Use skills acquired from lesson to compute calories burned needed for the Stella model.

• Have students hold a textbook in one hand and have the other hand empty. They raise and lower both arms until one arm begins to get tired. Ask questions relating to energy and weight. The more a person weighs the more energy is required to an activity.

• If you walk at a fast pace for 30 minutes and weigh 110 pounds will you burn the same number of calories as a person weighing 200 pounds?
• Why would weight make a difference in calories burned?
• How can one find how many calories they burn with different exercises?

1. Teacher assigns students to groups if there are not enough computers for each student in the class. This activity could be done with one computer connected to a projection system or television set. The class would discuss and decide how to build the spreadsheet. One student could enter the data. The more ideal situation is for each student to have access to a computer.
2. Students use the information on the Activity and Calories Chart on the Energy to Burn Activity sheet to enter data on the spreadsheet.
3. Students enter formulas and perform calculations on the spreadsheet to find how many calories are burned by a 175 lb person exercising for 10 minutes. Find help entering data into spreadsheet at Energy to Burn Help.
4. Students find calories burned for a 240 lb person and 98 lb person.
5. Information gained from the spreadsheet helps students draw conclusions and answer questions on the Energy to Burn Activity sheet.
6. Students compute and recored the energy burned by entering their own weight in the spreadsheet.

• Students will be assessed by evaluating the Energy to Burn Activity. (Answers are at the bottom of this page.)
• Students compute the energy burned in each activity during a 24 hour period. If all of their activities are not listed on the table on the Energy to Burn Activity, they may need to check the internet for more information. http://kirtland.cc.mi.us/~balbachl/calorie.htm

• Students are given the opportunity on the worksheet to write what they learned while doing the activity.

• Students can use other information on the Activity and Calories Chart on the Calories to Burn Activity sheet to find and answer questions about other weights.
• Other energy burning charts can be found on the internet and entered in a spreadsheet in order to compute calories burned for many other activities.

Answers to worksheet:

Answers: 1. 187 cal. 2. 228 cal. 3. Replace 240 with 98 4. 123 cal 5. 170 cal.

6. Answers may vary. One possible explanation: The more one weights, the more energy and effort it takes to do an activity thus more calories are burned.