grantmeawish Posted November 2, 2012 Share Posted November 2, 2012 or the answer is wrong in the back of the book. I am good in math but this one problem is driving me crazy! Quote Link to comment Share on other sites More sharing options...
grantmeawish Posted November 2, 2012 Author Share Posted November 2, 2012 wow! I sent my son off to do another subject and worked the problem. It contains so much algebra my 7 year old would never have figured it out! Fortunately I finally did! Quote Link to comment Share on other sites More sharing options...
grantmeawish Posted November 2, 2012 Author Share Posted November 2, 2012 Working it without algebra and bringing it down to his level is the challenging part for me. Quote Link to comment Share on other sites More sharing options...
Snickerdoodle Posted November 2, 2012 Share Posted November 2, 2012 Post the problems and someone here will show you the bar diagram way of solving it. :D Quote Link to comment Share on other sites More sharing options...
Sahamamama Posted November 2, 2012 Share Posted November 2, 2012 Post the problems and someone here will show you the bar diagram way of solving it. :DYes, post it here. Then, when I can't solve it either, you and your seven year old will have company. :lol: Quote Link to comment Share on other sites More sharing options...
grantmeawish Posted November 2, 2012 Author Share Posted November 2, 2012 I haven't learned bar diagramming. We just started Singapore. Here is the problem: The total volume of water in container A and container B is 83L. Container A has 65L more water than container B. what is the volume of water in container A? Thanks for help! Quote Link to comment Share on other sites More sharing options...
boscopup Posted November 2, 2012 Share Posted November 2, 2012 Have you looked at the example problems? They usually show you how to do that type of problem using bar models. And yes, post the problem here, and someone will show you the bar model method of solving it. Some problems are super easy once you draw a bar model. In CWP5, I'm letting my son use algebra if it makes more sense for that problem, but sometimes the bar models are easier and you can figure out the answer without any written calculations. Quote Link to comment Share on other sites More sharing options...
MrSmith Posted November 2, 2012 Share Posted November 2, 2012 I haven't learned bar diagramming. We just started Singapore. Here is the problem: The total volume of water in container A and container B is 83L. Container A has 65L more water than container B. what is the volume of water in container A? Thanks for help! How's this? [AAAAAAAA][bBB] = 83 [bBB][65L] [bBB][65L][bBB] = 83 [bBB][bBB] = 18 = 9L [A] = 74L I think bar models are taught in Level 3. It seems to me that CWP sometimes includes concepts that are meant to be a stretch at the given level. Quote Link to comment Share on other sites More sharing options...
Sahamamama Posted November 2, 2012 Share Posted November 2, 2012 (edited) I haven't learned bar diagramming. We just started Singapore. Here is the problem: The total volume of water in container A and container B is 83L. Container A has 65L more water than container B. what is the volume of water in container A? Thanks for help! I didn't look ahead at the other answers, so this is my best shot: |---9---|-------------65-------------| A |---9---| B Total = 83 (I tried to put this vertically, but it doesn't show up that way). 83 - 65 = 18 (this is the amount left over in A + the total in B) 18/2 = 9 Check: Container A = 65 + 9 = 74 Container B = 9 Total = 74 + 9 = 83 Did I get it? :bigear: Edited November 2, 2012 by Sahamamama Quote Link to comment Share on other sites More sharing options...
grantmeawish Posted November 2, 2012 Author Share Posted November 2, 2012 Very good! 74 is the answer. Now I am off to explain to my son who will still stare at me like I'm crazy : ) Thank you! Quote Link to comment Share on other sites More sharing options...
texasmama Posted November 2, 2012 Share Posted November 2, 2012 They can be solved without algebra. Although I find using algebra to solve some of them easier! I have gotten tripped up on some of them too. You aren't alone. ;) :iagree: The ones I tend to try to solve algebraically are generally solvable using bar diagrams...but it has been awhile since I have looked at SM level 2 so I am fuzzy on the details of that level. Quote Link to comment Share on other sites More sharing options...
Crimson Wife Posted November 2, 2012 Share Posted November 2, 2012 In CWP 2, I will draw the bar diagram for my child, then have him solve it. At this point, my goal is simply to familiarize him with the use of bar diagrams. Starting at level 3, I expect the student to try to draw the diagram himself/herself. Quote Link to comment Share on other sites More sharing options...
crazyforlatin Posted November 2, 2012 Share Posted November 2, 2012 Very good! 74 is the answer. Now I am off to explain to my son who will still stare at me like I'm crazy : ) Thank you! Actually, even though bar diagrams are great, the way Hands on Equations teaches this type of problem might connect better with some kids. MM and Beast Academy use a similar approach with a balance. If you have an iPad, Dragon Box is good as a foundation. Quote Link to comment Share on other sites More sharing options...
Mimm Posted November 2, 2012 Share Posted November 2, 2012 I frequently use algebra to solve the CWP but they CAN be solved without. It just requires a way of thinking that I was never taught. I figure out the problems ahead of time and then teach them on the wipe off board. My kids can not do them on their own. My math inclined child understands the problem easily as we do it but my non-mathy child needs lots and lots of explanation. Quote Link to comment Share on other sites More sharing options...
EKS Posted November 2, 2012 Share Posted November 2, 2012 Have you looked at the example problems? They usually show you how to do that type of problem using bar models. :iagree: Quote Link to comment Share on other sites More sharing options...
Barb_ Posted November 2, 2012 Share Posted November 2, 2012 How's this? [AAAAAAAA][bBB] = 83 [bBB][65L] [bBB][65L][bBB] = 83 [bBB][bBB] = 18 = 9L [A] = 74L I think bar models are taught in Level 3. It seems to me that CWP sometimes includes concepts that are meant to be a stretch at the given level. :iagree: We always use the CWP at a level lower than we are currently working. So right now, my son just finished 3A in the text/workbook, but we are currently working through CWP 2. Quote Link to comment Share on other sites More sharing options...
................... Posted November 2, 2012 Share Posted November 2, 2012 If you are unfamiliar with bar diagrams they can be a real challenge indeed! We were using 4th grade CWP and there was one that I couldn't even figure out and it was the example! I scanned it and sent it to one of my smartest friends and she said it was quite a challenge for her as well. She used algebra and then figured it out using the diagram after. We haven't done CWP in a while. Lol Quote Link to comment Share on other sites More sharing options...
Researcher Posted November 2, 2012 Share Posted November 2, 2012 The bar models are a real help when tackling some of these word problems. After learning how to use them, I really wish I had been taught that method in elementary school. Quote Link to comment Share on other sites More sharing options...
Wabi Sabi Posted November 2, 2012 Share Posted November 2, 2012 (edited) Are there any good resources online for learning how to use the bar diagram method? We don't use Singapore but I'm very intrigued. Does MM teach it similarly? Edited November 2, 2012 by Wabi Sabi Quote Link to comment Share on other sites More sharing options...
lorisuewho Posted November 2, 2012 Share Posted November 2, 2012 Are there any good resources online for learning how to use the bar diagram method? We don't use Singapore but I'm very intrigued. Does MM teach it similarly? This helped me. Quote Link to comment Share on other sites More sharing options...
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