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# Energy balance act lesson plan Unit 1

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### Energy balance act lesson plan Unit 1

1. 1. Pennington Biomedical Research CenterAwesome.2Cents! A Healthy Lifestyle Curriculum for Teens…Grades 8-12Lesson # 1: The Energy Balancing ActContent outline An overview of Energy Balance What determines the energy in and energy out components What happens with energy imbalances over time? Tips to maintain energy balanceLouisiana content standards: 1-H-1, 1-H-2, 1-H-4, 1-H-5, 1-H-6, 2-H-2, 3-H-1, 3-H-2, 3-H-4, 3-H-4, 6-H-1, 6-H-4 1-M-2, 3-M-1, 3-M-2, 4-M-2, 5-M-4, 5-M-5Objectives/Expected Learner Outcomes Students can identify the three components of energy expenditure. Students can identify the characteristics that contribute to energy expenditure. Students can learn to calculate daily energy expenditure.Lesson and Strategies Student group targeted 7-12th gradeTime required Teacher Preparation: 15-20 minutes Assessment: 10 minutesMaterials and Resources Power point presentation: The Energy Balance Act Projector Screen Laptop/Computer Energy Balance Assignment/Answer Key Physical Activity Assignment/Answer Key Physical Activity Energy Costs Handout Calculating Percent of Energy AssignmentTeacher PreparationMake copies of the Calculating Percent of Energy Assignment, Physical ActivityAssignment and the Energy Balance Assignment to pass out to students in class. Thecalculating percent of energy assignment and the physical activity assignment are to becompleted during class, with the energy balance assignment being a homework assignment.
4. 4. which is particularly good for delaying and preventing the development of diabetes.  Trans fat – Produced during food processing, occurs in ready - made foods such as cakes, crackers. Increases bad cholesterol (Low density lipoprotein or LDL) in the blood.7 Say: Raise your hand if you like pizza. (allow students time to respond). For our example, we will look at the percent of calories from total fat, carbohydrates, and protein in 2 slices of Pizza. In one serving of pizza (which is technically 2 slices), there are: 280 kcal 14 grams of total fat 28 grams of carbohydrates and 11 grams of protein Say: The first thing that we will do is to calculate what percent of energy comes from fat in one serving of the pizza. If there are 9 kcal for every gram of fat, then we need to multiply the amount of fat found in the 2 slices of pizza (which is 14 grams of fat) times 9. So, that would be 14 times 9. Do: Write on the board 14 grams of fat x 9 kcal/gram of fat = 126 kcal. Also, be sure to indicate to the students that grams of fat cancel out and that you are left with calories only. Say: What we just figured up was the number of calories in 2 slices of pizza that came from fat. Next, we need to know the actual percent of calories that came from fat. We would do this by dividing the number of calories from fat by the total calories in the serving of pizza that we ate. This would be 126 divided by 280. Do: Write on the board (underneath the last part) 126 kcal/280kcal = 0.45 Say: We get a decimal of 0.45. Does anyone know what we need to do to make this a percent? Do: Encourage students to answer. (Answer = multiply the decimal by 100) Say: Yes, and once we do this, we find that in this meal, 45% of the calories came from fat (total fat). Next, we will calculate the percent of calories from carbohydrates in this meal. Remember, that there are 4 kcal for every gram of carbohydrates. In this example, the meal (which is 2 slices of pizza) has 28 grams of carbohydrates. So, we need to multiply the total grams of carbohydrates in this meal times 4 (28 times 4).
5. 5. Do: Write on the board 28 grams of carbohydrates x 4 kcal/gram of carbohydrate = 112 kcal. Note that when you multiply, grams of carbohydrates cancel out and you are left with kcal only. Say: We find that there are 112 calories from carbohydrates in this meal. Next, we need to figure up what percent of calories came from carbohydrates. We do this by dividing the number calories provided by carbohydrates in our meal by the number of total calories in the meal. This is: 112 divided by 280. Do: Write on the board: 112 / 280 = 0.40. Say: Once we multiply this decimal by 100, we find that 40% of the calories in this meal are from carbohydrate. Finally, we will calculate the percent of calories in this meal from protein. Remember, that like carbohydrates, protein also has 4 kcal per gram. In this meal, there are 11 grams of protein, so in order to determine the number of calories from protein we would need to multiply 11 grams of protein by 4 kcal. Do: Write 11 grams of protein x 4 kcal/gram of protein = 44 kcal on the board. Again, note that grams of protein cancel out, leaving you with kcal only. Say: In this meal, there are 44 kcal from protein. To calcualte the percent of kcal from protein in this meal, we need to divide 44 kcals (calories from protein in the meal) by the total number of calories in the meal, 280. Do: Write 44/280= 0.1571 Say: When we multiply this decimal by 100, we get an answer of 15.7 which can be rounded to 16%. This tells us that 16% of the calories in this meal come from protein.8 Energy Input Say: Now, we are going to calculate how many calories came from fat, carbohydrates, and protein in another example. But this time instead of using a meal as an example, we will use an entire days worth of meals and beverages. Here is our example: On Monday, Jane consumed 1,800 calories, 65 grams of fat, 240 grams of carbohydrates, and 55 grams of protein. I’m going to give you a handout with this information on it, and will allow you time to work through it. Remember what we learned: 1 gram of fat = 9 kcal; 1 gram of carbohydrate= 4 kcal and 1 gram of protein = 4 kcal. If you have any questions, just let me know. ------------------------------------------------BREAK--------------------------------------------- Do: Pass out the Calculating Percent Energy from total fat, carbohydrates and protein handout. Allow students time to work through the example. Walk around the