Thread #421074

Vasudev, Varun
[Rancho San Joaquin Middle School]
Assigned Mentor: Kruczek, Klay
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expand section Show Problem: A Pound of Valentine's Chocolates
Status: SUBMITTED
Submission on 2/7/11 7:15 PM
Submission
502889
Created
02/07/2011 19:15:48
Status
SUBMITTED

Answer:

It takes Isolde 3 weeks to eat 1 pound of chocolate.

Explanation:

If Tristan eats can eat one pound of chocolate over six weeks, then he can eat 1/6 of a pound of chocolate in one week.

If it takes Tristan and Isolde eat the pound of chocolate in two weeks, then Tristan would have eaten 2/6 of the chocolate in those to weeks. That means in two weeks, Isolde will have eaten 4/6 of a pound of chocolate alone, or 1/3 pounds a week.

If Isolde eats 1/3 of a pound a week, then it would take her three weeks to eat all the chocolate alone.
Submission
Reply by Kruczek, Klay on 2/9/11 2:49 PM

Scoring grid will be visible to students.

Score

 
Problem Solving
Interpretation     X  
Strategy     X  
Accuracy     X  
Communication
Completeness     X  
Clarity     X  
Reflection X      

Message:

Varun

Congratulations on successfully solving the Math Forum's "A Pound of Valentine's Chocolates" problem.  You did a very good job of explaining all your steps along the way. In particular, I like how you explained how much chocolate Tristan ate in two weeks and how you stated how much chocolate was left after Tristan ate his amount of chocolate. I also appreciate how you separated your work into paragraphs, where in each paragraph you  explained a mathematical step you used to solve the problem.  I do have a few suggestions though that would make your solution that much better.

Can you explain how figured out that Isolde ate 4/6 of a pound of chocolate in 2 weeks?  Although you stated Tristan ate 2/6 of a pound of  chocolate in two weeks, another student may not understand how you determined the amount of chocolate Isolde ate.   Similarly, I see you said Isolde ate 4/6 of a pound of chocolate in two weeks.  How did you then determine she ate 1/3 of a pound of chocolate in one week?  You really did very well explaining most of your steps.  I just want you to make sure a student reading your solution can understand all the steps you took to solve the problem. 

My final suggestion would be to include a reflection.  In this reflection, you can discuss a hint you might give to a fellow student.   You could also  talk about any errors you made along the way and how you corrected them.  I was really impressed by your work.  I look forward to reading your revision.

Klay

I'm Klay Kruczek, a teacher at Western Oregon University
My students, who are future teachers, are participating in the online mentoring program with the goal of improving their mathematics and teaching skills.


Note for Approver:
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Date: 02/06/2011 00:33 Status: APPROVAL

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