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  #31 (permalink)  
Old 26-July-2008, 04:01 AM
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My son is 4 yrs old.

He's learning English but he prefers Math and he loves it.

More on numbers rather than words .

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  #32 (permalink)  
Old 26-July-2008, 04:06 AM
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My son is 4 yrs old.

He's learning English but he prefers Math and he loves it.

More on numbers rather than words .

My son has some natural ability to understand math. Always had it. He just finished GR. 12 with a 97 percent math average - without working at it.
As long as he can understand the concept (which he always does), the rest is simple for him.
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Old 26-July-2008, 04:16 AM
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My son has some natural ability to understand math. Always had it. He just finished GR. 12 with a 97 percent math average - without working at it.
As long as he can understand the concept (which he always does), the rest is simple for him.
Yeah.. numbers can be easily understood compare to reading it in words.
My son, knows how to count up pto 100 when his 3 yrs old . Now that his 4 , he's into adding and subtraction . Like adding more candies on his lunch box while I'm subtracting it in secret .



As for myself , I am not good in math , but I prefer it over English subjects back in college.
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Old 26-July-2008, 04:50 AM
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Now math...
while I can easily figure out what 2X2 is, for the life of me I can't figure out F = (1 kg)(9.8 m/s^2) = 9.8 kg-m/s^s. Maybe I'm not trying hard enough.
Well, those are exactly the same thing. (Hoping, of course, that you said that 2*2=4.) "F=ma" is different. The equation describes how one property changes as another does, when the third is kept the same. Double m and you double F if a doesn't change. Double m and you halve a if F doesn't change. That's not math, that's physics. Math is two times two. Physics describes how force, mass, and acceleration relate to each other, or how masses, distances, and gravitational force relate to each other. Putting numbers into an equation and finding the answer is just math.
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Old 26-July-2008, 06:02 AM
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Originally Posted by mugaliens View Post
Such as the MGRS, where 4QFJ12345678 actually means something?
It's more complicated than even that.

Lat and Lon describe a place on the earth. MGRS describes a grid square on a map and everything within that square has the same coordinates. You still need another point of reference to describe a place in the grid square in the real world. Like a magnetic bearing, a celestial reference, a geodetic datum, or even the Lat and Lon to make it an actual place.

It wouldn't be that they didn't know the system, it would be the system is completely worthless without the map, (or the datum and a conversion chart).

In some instances, you could even create a map using the MGRS system where multiple places around the world have the same coordinates.
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Old 26-July-2008, 12:46 PM
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A quick poll in my living room:
My wife says that spoken language is clearer than writtten.
She says that body language plays a huge part in understanding someone.
But what if they are on the phone? She still thinks the tone of your voice convey clearer meaning than written text.
I tend to agree with your wife. When you talk to someone in person, you have all sorts of extra clues that help you understand what you're hearing. I'm not sure about talking on the phone, though.

By the way, have you ever noticed that we use both sound and vision to understand speech? Although most of us are not trained in reading lips, we do a little bit of it unconsciously. I notice this when I watch movies. If I consciously divert my attention away from the mouths of the characters, staring at their eyes instead for example, it gets harder to understand what they're saying.

One of the problems of mathematics is that it has its own language, which is mostly written. Because mathematical language is so concerned with logical rigor, it has few extra clues. It takes practice and discipline not to miss anything important, and perseverence not to give up if you fail to understand something at first reading. Another problem of mathematics is that it deals with abstract concepts that can be quite removed from our everyday experience. When we're trying to reason about things that are not familiar, it's easy to get lost. Another problem, I would say, is that mathematical language can sound monotonous. A little repetition is not a bad thing -- it helps fill in those gaps in our understanding. But when everything starts to sound or look the same, our eyes have a tendency to glaze over, and our mind and ears have a tendency to tune out.
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Old 26-July-2008, 01:08 PM
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I tend to agree with your wife. When you talk to someone in person, you have all sorts of extra clues that help you understand what you're hearing. I'm not sure about talking on the phone, though.
There are trade-offs.

For instance, the "listener" can go back over the written communication, and review it as an entire message. Verbal cues, and even whole words, can be lost in transmission.

Of course, verbal encounters offer the unique opportunities for redundancy (e.g., feedback from the listener, or instantly repeating the message) but there is a reason that society as a whole relies upon written communication for its important stuff (contracts, mission statements, directions, orders). There are just too many advantages.
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Old 26-July-2008, 01:41 PM
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Yes, I agree with that as well.

How did the similie-less experiment turn out, by the way?
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Old 26-July-2008, 02:26 PM
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It's more complicated than even that.

Lat and Lon describe a place on the earth. MGRS describes a grid square on a map and everything within that square has the same coordinates.
No.

Everything within that square has the same "grid zone," which is the 4QFJ part. The Wiki page is misleading. I edited it to reflect reality.

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You still need another point of reference to describe a place in the grid square in the real world. Like a magnetic bearing, a celestial reference, a geodetic datum, or even the Lat and Lon to make it an actual place.
No.

The 12345678 part denotes the location, via "right up." 4QFJ defines the lower-left corner of the grid. Grid coordinates are always in pairs. Thus, you can have two digts, four, six, eight, or ten. The first half of the number (1234) tells me that it's .1234 of the entire grid to the right of the lower-left corner (4QFJ) and .5678 up from there.

Since each grid (4QFJ) is 10km by 10km, using ten digits gets your accuracy down to 1 meter.

Quote:
It wouldn't be that they didn't know the system, it would be the system is completely worthless without the map, (or the datum and a conversion chart).
Or a conversion algorithm which references a geodetic datum. Most handheld GPS units allow you to use grid coordinates.

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In some instances, you could even create a map using the MGRS system where multiple places around the world have the same coordinates.
No.

The MGRS system always begins with the grid zone (4QFJ). There are no duplicates.

In all instances (not just some), leaving off the grid zone leaves you with an even number of digits (12345678) called the "numerical location" which apply equally to all grids (not just some).
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  #40 (permalink)  
Old 27-July-2008, 07:57 AM
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How did the similie-less experiment turn out, by the way?
The people who'd be could be most helped by use of smilies, ignore them anyway
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  #41 (permalink)  
Old 29-July-2008, 04:23 AM
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There are no duplicates.
For most maps this true. However, you can make maps using the MGRS as your system, with the coordinates being based on your own designations. In FID/UW training they teach it. Instead of using grid zone numbering based off of UTM, or UPS, you have something that can be explained more easily like the numbers 1-10 for your vertical, and the names of local animals for your horizontal. Then for your squares you can use family names and local plants. And so on and so forth. In addition, it is very prevelant in several African militaries (since the maps represent them much better) to use MGRS on Mollweide projections/elliptical projection (not sure what the correct modern term for them is). UTM grid labeling is not used on these maps.

It's designed so that if a member of your host nation (in the case of FID) or guerillas (in the case of UW) is a sympathiser to the opposition, they are left with intelligence that has no value except for those who made the map in the first place. i.e. sympathiser reports that an equipment drop to be at such and such a location.
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