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Posted: 3/20/2019 11:15:33 PM EDT
[#1]
Quote HistoryQuoted:
He clearly knows how to solve it WHEN the dimensions are available. He’s already figured out the area of the two larger areas but without the height dimension he can’t figure it out. And I think it’s fair to say we don’t expect an 8 year old to start graphing out stuff to scale. Quote HistoryQuoted:
Quoted:
It's missing a dimension. Have the kid draw a dimension on the center part. Call it A. Then calculate the total area by summing all the parts, 4X2 + 4X3 + 4A = 20 + 4A. And I think it’s fair to say we don’t expect an 8 year old to start graphing out stuff to scale. Seeing as there are no fractions, 1 would be assumed. (It is third grade math, they don’t try to trick you until 4th  )
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Posted: 3/20/2019 11:16:04 PM EDT
[#2]
Quote HistoryQuoted: That doesn't work. 
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Posted: 3/20/2019 11:17:06 PM EDT
[#3]
Quote HistoryQuoted:
You can’t assume while numbers. Quote HistoryQuoted:
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The height has to be 1. It is not as tall as 2 or 3 and they are using while numbers. Sides are 4 and that section is less than hlf the height of 4 so it has to be 1 |
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Posted: 3/20/2019 11:18:55 PM EDT
[#4]
Simple math!
= tax everyone @ 70% ! |
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Posted: 3/20/2019 11:19:10 PM EDT
[#5]
Quote HistoryQuoted:
The height has to be 1. It is not as tall as 2 or 3 and they are using whole numbers. Sides are 4 and that section is less than half the height of 4 so it has to be 1 |
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Posted: 3/20/2019 11:20:18 PM EDT
[#6]
ugggghhhhh my brain hurts thinking about this
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Posted: 3/20/2019 11:21:56 PM EDT
[#7]
Eerrrrmahgerd
draw the thing out on real graph paper 24 |
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Posted: 3/20/2019 11:24:56 PM EDT
[#8]
Quote HistoryQuoted:
Yes, but the question is, find the area of the shape. So measure all dimensions and give the the actual correct answer. Quote HistoryQuoted:
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No ruler or tape measure in the house? |
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Posted: 3/20/2019 11:25:38 PM EDT
[#9]
Quote HistoryQuoted:
That's a rule? |
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Posted: 3/20/2019 11:26:20 PM EDT
[#10]
Quote HistoryQuoted:
Eerrrrmahgerd
draw the thing out on real graph paper 24 |
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Posted: 3/20/2019 11:26:33 PM EDT
[#11]
Quote HistoryQuoted:
And it's missing a dimension. Quote HistoryQuoted:
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No ruler or tape measure in the house? Draw some right triangles, do the math and you can find all missing measurements |
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Posted: 3/20/2019 11:28:08 PM EDT
[#12]
Fail on dimensioning.
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Posted: 3/20/2019 11:29:22 PM EDT
[#13]
Quote HistoryUntil it doesn't...
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Posted: 3/20/2019 11:29:22 PM EDT
[#14]
Quote HistoryQuoted:
I'd say the missing measurement looks to be about 3 inches. And believe me...I know what 3 inches looks like.  |
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Posted: 3/20/2019 11:29:25 PM EDT
[#15]
Quote HistoryQuoted:
Which can easily be determined.... Draw some right triangles, do the math and you can find all missing measurements Crappy diagram is crappy. |
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Posted: 3/20/2019 11:30:00 PM EDT
[#16]
I like how everyone is in here using engineering degrees to figure out what the answer “should” be when it’s third grade math.
The answer is...the teacher fucked up. |
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Posted: 3/20/2019 11:30:38 PM EDT
[#17]
Quote HistoryQuoted: Until it doesn't... https://www.dropbox.com/s/tgzip8adw7oby6v/4FE703A6-B81A-47D4-B622-2F934ED8C416-884852.jpg?raw=1 |
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Posted: 3/20/2019 11:31:29 PM EDT
[#18]
Quote History |
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Posted: 3/20/2019 11:31:42 PM EDT
[#19]
Bad drawing. It would not fly at a basic engineering level. Why should a 3rd grader be tasked to solve this? This is what mid level engineers are paid to solve.
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Posted: 3/20/2019 11:33:04 PM EDT
[#20]
Quote HistoryQuoted:
I like how everyone is in here using engineering degrees to figure out what the answer “should” be when it’s third grade math. The answer is...the teacher fucked up. |
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Posted: 3/20/2019 11:33:42 PM EDT
[#21]
Quote HistoryQuoted:
It's not to scale, so what makes you think the top right portion makes a perfect square other that assuming? Quote HistoryQuoted:
It's not to scale, so what makes you think the top right portion makes a perfect square other that assuming? Like OP said, teacher fucked up by assigning an incomplete and poorly drawn problem. Edit: sorry, wrong quote |
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Posted: 3/20/2019 11:34:22 PM EDT
[#22]
The answer is between 23 and 25 square inches with a greater degree of confidence as the area approches 24
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Posted: 3/20/2019 11:35:43 PM EDT
[#23]
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Posted: 3/20/2019 11:36:49 PM EDT
[#24]
Quote HistoryQuoted:
He clearly knows how to solve it WHEN the dimensions are available. He’s already figured out the area of the two larger areas but without the height dimension he can’t figure it out. And I think it’s fair to say we don’t expect an 8 year old to start graphing out stuff to scale. Quote HistoryQuoted:
Quoted:
It's missing a dimension. Have the kid draw a dimension on the center part. Call it A. Then calculate the total area by summing all the parts, 4X2 + 4X3 + 4A = 20 + 4A. And I think it’s fair to say we don’t expect an 8 year old to start graphing out stuff to scale. Graphing has nothing to do with the solution. Or algebra. It's still a simple rectangular area problem we just have to fill in the blanks to get a solution so we'll add a dimension called A, instead of some number such as 7. Let's say the missing dimension is 1.7. Writing 1.7X4 is no different than writing AX4, we're simply using the language of arithmetic, albeit a part that is not familiar to 3rd graders. On the other hand, there's no reason it shouldn't be familiar. Working the problem this way, causing both of you to puzzle out the problem, is more interesting and might cause the kid to discover that he likes math and solving engineering problems. Instead of going through the simple motions after an answer he already knows. |
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Posted: 3/20/2019 11:37:06 PM EDT
[#25]
Quote HistoryQuoted: |
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Posted: 3/20/2019 11:38:50 PM EDT
[#26]
Quote HistoryQuoted: It's not to scale, so what makes you think the top right portion makes a perfect square other that assuming? sometimes a cigar is just a cigar |
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Posted: 3/20/2019 11:39:51 PM EDT
[#27]
I am a writer, not a rocket scientist.
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Posted: 3/20/2019 11:39:52 PM EDT
[#28]
Quote HistoryQuoted:
24 square inches the bottom piece is 1x4 use the length of the 3 inch side as a scale by reflecting it across the diagonal https://www.AR15.Com/media/mediaFiles/3097/4FE703A6-B81A-47D4-B622-2F934ED8C416-884852.jpg 
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Posted: 3/20/2019 11:40:22 PM EDT
[#29]
Quote HistoryQuoted:
That's a rule? Quote HistoryQuoted:
Quoted:
The height has to be 1. It is not as tall as 2 or 3 and they are using whole numbers. Sides are 4 and that section is less than half the height of 4 so it has to be 1 
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Posted: 3/20/2019 11:43:35 PM EDT
[#30]
Quote HistoryQuoted:
He's comparing the center section to the height which are clearly different length and yet have the same dimension. Like OP said, teacher fucked up by assigning an incomplete and poorly drawn problem. Edit: sorry, wrong quote Quote HistoryQuoted:
Quoted:
It's not to scale, so what makes you think the top right portion makes a perfect square other that assuming? Like OP said, teacher fucked up by assigning an incomplete and poorly drawn problem. Edit: sorry, wrong quote That leaves 1 |
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Posted: 3/20/2019 11:50:41 PM EDT
[#31]
Quote HistoryQuoted:
That is the point, can you make reasonable assumtion based on the facts given. Yes, it is safe to say that space is <100, < 4,<2 That leaves 1 |
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Posted: 3/21/2019 12:02:00 AM EDT
[#32]
May I be excused?
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Posted: 3/21/2019 12:04:06 AM EDT
[#33]
Hopefully, by morning there aren't guys still trying to figure this incomplete problem out.
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Posted: 3/21/2019 12:05:52 AM EDT
[#34]
Quote HistoryQuoted:
So now we are teaching 3rd graders that math is not an exact science? How many nails does it take to build a dog house? |
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Posted: 3/21/2019 12:12:42 AM EDT
[#35]
Send it back like this but in your kid's handwriting.
Area = 4(x)+20 |
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Posted: 3/21/2019 12:16:36 AM EDT
[#36]
Quote HistoryQuoted:
How many trips to home depot does it take to repair 1 faucet? How many nails does it take to build a dog house? Quote HistoryQuoted:
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So now we are teaching 3rd graders that math is not an exact science? How many nails does it take to build a dog house? Edit: if you have correct dimensions |
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Posted: 3/21/2019 12:16:56 AM EDT
[#37]
Quote HistoryQuoted:
That doesn’t work. Quote HistoryQuoted:
Quoted:
24 square inches the bottom piece is 1x4 use the length of the 3 inch side as a scale by reflecting it across the diagonal https://www.AR15.Com/media/mediaFiles/3097/4FE703A6-B81A-47D4-B622-2F934ED8C416-884852.jpg |
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Posted: 3/21/2019 12:25:18 AM EDT
[#38]
Can't solve for the teacher being an idiot.
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Posted: 3/21/2019 12:32:02 AM EDT
[#39]
20 + 4x
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Posted: 3/21/2019 12:33:38 AM EDT
[#40]
12345....
87 |
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Posted: 3/21/2019 12:33:56 AM EDT
[#41]
Quote HistoryQuoted:
Trick question? |
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Posted: 3/21/2019 12:44:30 AM EDT
[#42]
I think it's missing a dimension as well, but if this is from common core, I would assume the left over middle portion is 1 x 4 and total is 24.
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Posted: 3/21/2019 12:55:44 AM EDT
[#43]
Quote HistoryQuoted:
No ruler or tape measure in the house?
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Posted: 3/21/2019 12:57:00 AM EDT
[#44]
You should circle the areas where the dimension is missing and write "Problem unsolvable without missing dimension". Then print out all the responses here on GD and staple them to the paper for your child to turn in to the teacher, courtesy of yourself. Make him or her feel like a proper idiot with all the advanced mathematicians here pointing out the obvious. Cheers.
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Posted: 3/21/2019 12:58:49 AM EDT
[#45]
It's missing the front sight.
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Posted: 3/21/2019 1:14:05 AM EDT
[#46]
Speaking as someone who was a surveying draftsman for years and used to drawing things from notes:
That diagram cannot be reproduced without making assumptions. You'd have to assume some kind of scale to 100 percent say what is what. There's no amount of drawing diagonals or anything else that makes that truly 100 percent able to be drawn. |
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Posted: 3/21/2019 1:17:34 AM EDT
[#47]
Maybe that's part of the problem.
The answer is that it's not possible to answer due to missing dimension |
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Posted: 3/21/2019 1:25:42 AM EDT
[#48]
4Y+20
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Posted: 3/21/2019 1:37:37 AM EDT
[#49]
Here's what happens if you just try to scale it and force a closure of the two undefined lines. Less than a whole number. Granted the drawing is skewed and I didn't bother straightening it out.
For those of you saying it isn't to scale, it actually is, it's just skewed because of the angle of the photo taken. The scale doesn't make sense for whole numbers for the undefined piece though, that's the weird part. It legitimately seems to want to be between 2 and 3, but maybe the angle is just throwing me off of the paper. (Yes I drew and scaled it in feet, relative units are relative.) 
If you want to see what 2 and 3 look like: 
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Posted: 3/21/2019 1:52:49 AM EDT
[#50]
Quote HistoryQuoted:
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQhQfqUEsDLnid_5v-o7j5RA5LXLNyIKuQXfOCwWSRzYNP9fc2N It's missing the front sight. You score an 87.
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