Date: Fri Nov 15 14:17:01 PST 2002
Student's Name: Emily
Mentor Reply:
Hi Emily,
Thank you for responding to the problem. I will guide you by showing how to solve the problem. The first thing that you want to do is draw a picture so that you can fully visualize the problem. The next thing you do is assign the pole a total length equal to
Date: Sun Nov 17 18:13:50 PST 2002
Student's Name: Emily
Answer(or question to Mentor): I didn’t know if my solution came through the first time or not, but my teacher told me to write it again so I am!
Problem Solution: 1. Multiply the amount of fat, carbs, and protein by the amount of calories in one gram of fat, carbs, and protein! Then add them all up and you’ll end up with 330! Then put 330 over 2000 calories!
2. Since you’ve already multiplied the amount of fat by the amount of calories in one gram of fat you already have the answer! So 126 which is 126%!
Rationale: 1. You must multiply to figure out the amount of calories in the burger! Then add up all your multiplications to get 330! Then it said to put it as a percent so I put it over the recommended daily allowance; which was 2000!
2. Since you have already multiplied the amount of fat by the amount of calories in one gram of fat earlier you already know the answer; which is 126; or 126%!
Challenge Solution: Divide 3 by 1/2 and get 6! Then divide 6 by 3/4 and get 24! Then divide 24 by 1/3 and get 72! So then you know how many she started with; 72! Man they eat a lot!
Rationale: For one thing you must work backwards since we already know there were at least 3 chicken nuggets. Then you just keep dividing backwards to figure out how much they had before they ate it! This may sound confusing, because it does to me right now! But I hope you can understand! Well Cya!Bye!
Date: Tue Nov 19 18:12:12 PST 2002
Student's Name: Emily
Answer(or question to Mentor): Here's an easier answer to c:
Problem Solution: She ate 330 calories out of her 2000 daily.
Challenge Solution: She started out with 72 chicken nuggets.
Date: Tue Nov 19 18:15:09 PST 2002
Student's Name: Emily
Answer(or question to Mentor): Oops sorry I forgot to do number 2 on the Problem Solution. So Problem Solution: 2. 126%.
Date: Tue Nov 19 21:20:35 PST 2002
Student's Name: Emily
Mentor Reply: Hi Emily,
Great job for problem #1. Your answer 300/2000 is correct. Your explanation was clear and easy to follow. Unfortunately, problem #2 is incorrect. Why is 126 calories of fat equal to 126% of the cheeseburger? Is not 100% the whole cheeseburger? What does 126% of the cheeseburger mean?
Thanks for trying the challenge problem. Your explanation at the beginning is correct until you divide 24 by 1/3. In the problem, Ralph ate 1/3 of the nuggets. If he ate 1/3 of the nuggets then how much is left? Hope to hear from you soon.
Sincerely,
Maria Alvarez
Date: Wed Nov 20 22:20:59 PST 2002
Student's Name: Emily
Instructor Comments: Maria,
Good response! However, I think you have a typo: You state that her answer of 300/2000 is correct, but she wrote 330/2000, which is correct. Your response for part 2 is good, although I think I would give her a bit more of a hint because there are apparently two problems. First, she is not thinking of comparing the amount of calories of fat to the amount of calories in the whole cheeseburger. Second, she is not converting the fraction to a percent correctly. So, I would tell her both of these issues separately, and explain how to convert a decimal to a percent. Finally, your comment on the challenge is good.--DR. Bowers
