Villagersonline : blogs : james : Two trains leave . . .
villagersonline
A Community Tunneling Protocol
The Village meets at 5pm Sundays
1926 N. Cloverland Ave. map

Links
(edit) The Village Cancer Relief Fund;


From: james
Date: Sat Jul 31 05:15:04 MST 2004 Subject: Two trains leave . . .

Responses
derek: history problems (8/1/04)
keibru: you're both wrong (8/2/04)
james: Parallel lines (8/2/04)
derek: No Subject (8/2/04)
dbonilla: || = Same Slope (8/3/04)
keibru: dear fellow... (8/6/04)
dbonilla: More Math (8/15/04)
Karen: Cultural bias (8/3/04)
james: ditto (8/3/04)
derek: logic (8/4/04)
benjipark: Photography (8/4/04)
mike: Blame the dispatcher (8/9/04)
Responses (sorted by date)
dbonilla: More Math (8/15/04)
mike: Blame the dispatcher (8/9/04)
keibru: dear fellow... (8/6/04)
benjipark: Photography (8/4/04)
derek: logic (8/4/04)
james: ditto (8/3/04)
Karen: Cultural bias (8/3/04)
dbonilla: || = Same Slope (8/3/04)
derek: No Subject (8/2/04)
james: Parallel lines (8/2/04)
keibru: you're both wrong (8/2/04)
derek: history problems (8/1/04)
Here's one of my favorite word problems that I recently revised. Think hard.

Word problem

Train A leaves from Boston at 11:00 a.m. traveling at 60 mph headed towards Washington D.C. Train B leaves from Washington D.C at 10:43 a.m. headed towards Boston at 55 mph. When will the two trains meet?

Answer: I hope they never meet!! Think of all the damage that would occur if these two trains ever met at such a high rate of speed. This just makes me wonder who would ever put this type of word problem in any level of math textbook and why so many school superintendents allow it to be used as part of their math curriculum.

Edit this blog
Write a response Email the author



From: derek
Date: Sun Aug 1 10:04:18 MST 2004 Subject: history problems

I agree with you, James. Whoever came up with word problems is demented. The blending of "history" and math make my favorite word problems.

"If Caligula burned half of Rome while playing the violin for 2 minutes, how much of Rome would he burn if he played the violin for 3 minutes?"

"Hannibal crossed the Alps and killed 2752 of the 8000 Roman centurians. If after this, the Romans decimated their troops twice in punishment (killing every tenth man), how many Roman centurians would remain for the next fight?"

Does anyone else find these type of questions intensely morbid? What values are we teaching our children? I don't blame video games for desensitization, I blame Saxon word problems.

Edit this response
Write a response Email the author



From: keibru
Date: Mon Aug 2 15:41:39 MST 2004 Subject: you're both wrong

You whippersnappers are much too melodramatic. You have failed to properly assess the situation: the trains are on parallel tracks. You have created a mountain out of the dust of many molehills.

Edit this response
Write a response



From: james
Date: Mon Aug 2 16:21:01 MST 2004 Subject: Parallel lines

Hey Keith,

If you had learned anything in Math class you would know that two parallel lines never meet. That's why they are referred to as parallel!! Pay more attention!!!

Perpendicular lines meet as well as other lines (or railroad tracks) but parallel lines will never intersect at any point. Looks like Derek and I know a little bit more about math than you do. I'm glad I could school you on this important lesson in math. I just wish other people would get it besides me and Derek.

Edit this response
Write a response Email the author



From: derek
Date: Mon Aug 2 16:50:46 MST 2004 Subject:

yeah

Edit this response
Write a response Email the author



From: dbonilla
Date: Mon Aug 2 22:14:14 MST 2004 Subject: || = Same Slope

Usually "meet" is not synonymous with "bump into" in these cases. You guys are getting out of control, and having WAY too much fun. Ye need not invoke geometry. If when they meet, the trains are on different (non-intersecting) tracks then there's no problem; they will not crash. But if they're on the same track when they meet, then it is okay to implicate terrorist motives in the word-problem writer.
But, "Do not assume that all math teachers are evil."
- Math 7:1

Edit this response
Write a response Email the author



From: dbonilla
Date: Sat Aug 14 23:15:34 MST 2004 Subject: More Math

The statement of James that parallel lines never intersect has an important exception. Mike alluded to a dependent system of two equations. This is a situation somewhat exemplified by certain intersections in Tucson, and I'm admitting Karen's "cultural bias in this car-ridden western land" here. The intersections of Kolb and Grant and of River and Thornydale are, at least on a map, parallel line segments that intersect.
There is perhaps a better "road example" in Phoenix where I-17 and I-10 are one and the same freeway for several miles, although they are not always straight lines.
A more beautiful example is the system {x + y = 1 and 2x + 2y = 2} because the two lines represented by these equations are identical and therefore intersect at EVERY point along their length!
(I'm sorry, Derek, if you do not share my excitement over this, lol.)

Edit this response
Write a response Email the author



From: Karen
Date: Mon Aug 2 23:46:10 MST 2004 Subject: Cultural bias

This word problem is a classic example of cultural bias: in this car-ridden western land where one sees only one Amtrak a day (if one stands on Toole Street at the right time), how can our students even begin to conceptualize a situation in which trains might meet, whether it be on a friendly or a collision course?

Edit this response
Write a response Email the author



From: james
Date: Tue Aug 3 04:30:32 MST 2004 Subject: ditto

I should correct myself. Not only do Derek and I understand the situation but it seems Dennis and Ms. Bradley do also. I stand corrected. Oh, and Dennis thanks for the mathematical references to define the matter-at-hand. Ms. Bradley, K2 for the rest of us, to me has a clear understanding of the social/cultural implications of the point I am trying to share. Thanks Karen.

Edit this response
Write a response Email the author



From: derek
Date: Tue Aug 3 18:19:10 MST 2004 Subject: logic

Here's the deal. Not to take myself out of the fold, but I disagree.

I believe that the two trains are on a collision course for one reason. Necessity. Because I don't care how far apart the trains are unless there is a necessity to avoid castastrophe. What is the point otherwise? To get an interesting picture out the window of one train? I don't care nearly enough about photography for that. Sorry, Benji.

And beyond that, I've displaced my entire understanding of mathmatical principals from those of logic. Logic I leave in the mighty hands of philosophy and theology. I could never understand advanced mathmatics until I began to think of it in the context of language. That is to say, there is no logic, only communication. I do the problem correctly to communicate properly with the teacher, just as I would in any other class using my English skills. Unless I'm taking Spanish classes, in which case I'm pretty much just screwed.

So, I refuse to enter into a debate of logic regarding the mathmatical validity of intersecting or perpendicular tracks, or even of being ushered into safety by my co-conspirator in this debate. I choose to stay on the train tracks. It is a matter of language, not of logic. My point will be communicated fully as the trains collide into my waiting body. . .

Edit this response
Write a response Email the author



From: benjipark
Date: Wed Aug 4 00:27:20 MST 2004 Subject: Photography

And what is a photograph if it can't be doctored? Of course I can take a picture of a train, digitally miss-construe the situation, and impending disaster of two trains travelling on two parrallel track about to smach into two trains travelling on parrallel tracks that are perpendicular to the two original tracks. Needless to say the massive carnige and mayhem about to ensue could only be brought to you by the photograph of a train, that and math. Math does the things. Only math could bring you a computer program capable of creating such horrific insanity. I blame math for all accidents, natural disaters, and terroist attack as refferenced by Dennis.

Edit this response
Write a response Email the author



From: mike
Date: Mon Aug 9 16:42:25 MST 2004 Subject: Blame the dispatcher

I am surprised you would blame the dispatcher for the trains colliding. It is an old story though.
Dennnis already explained the math to you, so I will not go into how parellel lines can have dependent systems. Nor will I explain the awnser to the equation, D=(r)(t)
I will defend the dispatcher. When I dispatched, it was common for me to tell drivers to meet at an intersection.
I did not tell them to collide. Lets lay off the dispatchers. Thier job is hard enough without math teachers, or employees that will not use commom sense.

Edit this response
Write a response Email the author


Write a blog
Latest Updates

blogs (upload)
eric: Parenting thoughts (8/11/14)
sunnygirl7d: Reuben fishing blog (1 resp) (8/8/14)
samantha: My new blog (8/11/14)
eric: New Website (8/7/14)
dbonilla: Annie Moses Band (3/14/14)
Suki: Ash Wednesday (3/5/14)
andrea: Good news update! (1 resp) (2/3/14)
Carena: More moving help (2/1/14)
Carena: A Friend in Need (3 resp) (1/25/14)
em: Tell me how I can pray (1/24/14)
andrea: Need for Volunteers-Foster Car... (1/19/14)
andrea: suffering (1/7/14)
rodhugen: Two quotes (2 resp) (1/3/14)
cwill: Please pray (2 resp) (1/26/24)
Carena: Polaroid Camera (12/23/13)

pictures (upload)
Suki: Vespers Dec 2012 (1/26/24)
eric: Ordination (3/16/14)
Suki: Soup Supper 2012 (3/17/14)
eric: Belonging 2012 (1/7/14)
eric: sabbath (3/16/14)

bios (upload)
Mike_Wise (1/16/13)
james (11/14/12)
clrclady (1/28/12)
SPark (11/27/11)
benjipark (12/2/10)

music (upload)
Frosted Flakes :
Everywhere j2014 (1/16/14)
Frosted Flakes :
New Found Hope J2014 (1/16/14)
Frosted Fla es :
Trinity Jan2014 (1/16/14)
Skeptic Chickens :
No Condemnation (7/29/13)
Karen and Friends :
Breastplate May 5 (5/10/13)

sermons (upload)
Eric,Ron Layman: The Disciplines RL (3/6/14)
Eric: Habakkuk Part One (1/16/14)
Eric: Noah's Ark (9/27/13)
Eric: The Fall (9/13/13)
Rod: Creation (9/13/13)

Villagersonline.com 2010
Contact Us
(edit) Site Meter
Free Search Engine Submission
Free Search Engine Submission

"Best Viewed at 1024x768 under the light of the full moon in July while Mercury is in Leo
and six pigmy marmosets do the lambada behind you singing Kumbaya" -- User Friendly