A low fat cookie with 2 grams of fat, 10 grams of carbohydrate, and 2 grams of protein contains:
A. 14 calories
B. 56 calories
C. 66 calories
D. 126 calories
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you know about calories per gram? How does it relate to the question?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
C. 66 calories
Clarify Question
· What is the key concept addressed by the question?
o The question asks about the number of calories per gram of carbohydrate, fat, and protein.
· What type of thinking is required?
o You are being asked to apply the calories per gram of fat, carbohydrate or protein to calculate the total calories in a cookie.
· What key words does the question contain and what do they mean?
o 2 grams of fat, 10 grams of carbohydrate, and 2 grams of protein – these three compounds will make up all of the calories in the cookie.
Gather Content
· What do you know about calories per gram? How does it relate to the question?
o Fats contain 9 calories/gram and contain more calories than carbohydrates or proteins because the fats are more reduced.
o Carbohydrates and proteins contain only 4 calories/gram because they are partially oxidized.
Consider Possibilities
· What other information is related to the question? Which information is most useful?
o To calculate total calories the mass of each compound is multiplied by its number of calories per gram and the three numbers added together.
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
o 2 grams fat x 9 kcal/gram = 18 kcal.
o 10 grams carbohydrate x 4 kcal/gram = 40 kcal
o 2 grams protein x 4 kcal/gram = 8 kcal
o 18 + 40 + 8 = 66 kcal
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
o This question asked you to apply the calories per gram of fat, carbohydrate and protein to calculate the total calories in a cookie. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you remember that fats contain 9 kcal/gram while carbohydrates and proteins contain 4 kcal/gram? Did you realize that you needed to add up the calories from all three conversions to calculate the total number of
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