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Um...you probably should have chosen a more difficult problem. :p
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That's the point.
Using the common-core-counting method, it would take forever!
Not using the common-core-counting method, it takes as long as it takes to see what the last digit of the number is.
I wanna be a eunuchs developer! Pass me a bread knife!
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string s = "472326598458412365452131236525897456321452453698736985215457" ;
int i = s.IndexOf ( "7" ) ;
s = s.SubString ( s , 0 , i ) + s.SubString ( s , i+1 ) ;
(Or something like that.)
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Mark_Wallace wrote: Now subtract 7 from 472326598458412365452131236525897456321452453698736985215457.
42326598458412365452131236525894563214524536983698521545
Tada!!
Jeremy Falcon
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One criticism I have heard a lot about some 'modern' education techniques is the emphasis on 'research'. With the advent of the internet some children are being encouraged to look everything up and 'discover'.
In some cases there has been a strong move away from rote learning or the learning of facts.
It's certainly something I have seen a bit of, where giving a person a task they rely more on their opinion than on hard evidence. Evidence they can gain by looking in detail at what is happening.
My take on it is that you need a solid foundation in basic facts such as memorising simple multiplication tables for simple things. Then extrapolating from those basics to more abstract concepts when you come to things like calculus.
“That which can be asserted without evidence, can be dismissed without evidence.”
― Christopher Hitchens
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It much older than the Internet - it's called Pupil-Centred Learning and has been around in one form since the 70s to my knowledge, probably longer.
This is interesting [^] as it suggest student centred learning can't work until you are about 11 as it requires logic.
Alberto Brandolini: The amount of energy necessary to refute bullshit is an order of magnitude bigger than to produce it.
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Basically, the third column minus the first column equals the second column or original problem.
32 + 30 + 20 + 15
- (30 + 20 + 15 + 12)
= 32 - 12
Addition is easier than subtraction sometimes. That's actually quite smart.
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Hmm. It looks like a convenient "shortcut" for doing those operations in your head. It's analogous to how a lot of retailers teach their cashiers to make change for quick cash transactions. I don't like the notion of teaching this as a primary method, without teaching the underlying primitive operations.
It's yet another example of "nothing changes". When I was in first and second grade 45 years ago, we were taught the "New Math". I had a really hard time with it, especially subtraction. My mother taught me how she learned how to do it. I got dinged a few times on tests for not following their method, but the teacher couldn't argue with the fact I got the correct answer.
A final observation; some kids will learn how to do basic arithmetic well, regardless of the algorithm that is taught. Some will not. It depends somewhat on the kid, but more on the parents. Parents who participate and monitor their kid's education will ensure they learn. Parents who treat school as an all-day babysitter will wonder why their kid is still working as a server at T.G.I. Friday's when they're 32.
Software Zen: delete this;
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If I were inventing a program called Common Core Math it's purpose would be to set standards across (whatever entity) that are expected to be met to be considered as having adequately mastered various levels mathematics. The purpose would be to eliminate various schools districts (public, private, parochial) from letting even more innumerate cretins loose on society.
One needs to add, subtract, multiply, and divide. Understand some rudimentary geometry and be able to apply said knowledge to problem solving. Problem types would be realistic in terms of applicability to what passes for real life situations and be devoid of fluff. You need to be competent to move on.
The implementation I would leave to those on the teaching side.
That, and the assertion that the occasional sacrifice of troublesome students benefits classroom discipline, may well be why I didn't become a teacher. Or maybe why I should have?
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "As far as we know, our computer has never had an undetected error." - Weisert | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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Someone got the idea into their head (Can you smell Ph.D. dissertation?) that students need to understand HOW they got the answer not just the mechanics of getting the answer. Trust me, there are a whole bunch wilder things buried in there. Some bizarre 5th grade thing my wife showed me used area to figure out some calculation that had NOTHING to do with area.
I agree with the idea of common core, kids in the first grade should know this list of stuff, but there all sorts of problems with the ideas on how to get the information into those little skulls full of mush.
Kids don't memorize multiplication tables anymore so they have to figure out each part of a two digit by two digit multiplication problem.
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Actually, been having to deal with the W8'ish UI on Windows Server 2012 R2.
Gawd, I hate the look. I like aero glass, I like the 3D buttons, etc. This monotonic blue border around everything, the flat buttons, I want to 
[edit]Oh, and getting the mouse just right over the hotspots in the corners of the screen when remote desktop-ing in to a machine is a joke (I have multiple monitors, so the mouse just moves to the next monitor).  [/edit]
Marc
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You loved it!? Now try it over an RDP connection...
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Kornfeld Eliyahu Peter wrote: You loved it!? Now try it over an RDP connection...
Understandable, but still, there's no excuse for the flat Window 1.0 look.
Marc
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Windows 1.0 => Windows 10! 
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Marc Clifton wrote: Gawd, I hate the look.
I hate it also, looks so 3rd gradish?
New version: WinHeist Version 2.1.0 Beta
Have you ever just looked at someone and knew the wheel was turning but the hamster was dead?
Trying to understand the behavior of some people is like trying to smell the color 9.
I'm not crazy, my reality is just different than yours!
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Yes I see what you're saying, so the UI team at uSoft gets inspiration from etch-a-sketch maybe? 
New version: WinHeist Version 2.1.0 Beta
Have you ever just looked at someone and knew the wheel was turning but the hamster was dead?
Trying to understand the behavior of some people is like trying to smell the color 9.
I'm not crazy, my reality is just different than yours!
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Mike Hankey wrote: so the UI team at uSoft gets inspiration from etch-a-sketch maybe?
Aye, that definitely fits better. It sure looks like an etch-a-sketch UI.
Marc
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Marc Clifton wrote: I have multiple monitors, so the mouse just moves to the next monitor
What do you mean by this? Is this a known problem? I run a VM on one screen and the desktop on the other and I've been dealing with the cursor jumping to the other screen and driving me crazy, so I'm very curious. Thanks.
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Marc Clifton wrote: Oh, and getting the mouse just right over the hotspots in the corners of the screen when remote desktop-ing in to a machine is a joke (I have multiple monitors, so the mouse just moves to the next monitor).
Use the shortcut keys you should, hmmm, yes. 
- Start screen: Win
- Charms bar: Win + C
- App switcher: Win + Tab
http://www.computerhope.com/shortcut/windows.htm#win8[^]
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Except for some VMs and RDP scenarios, the host OS will intercept those and not pass them on to the guest/remote.
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Remote Desktop Connection has three options for the "Apply Windows key combinations": Full-screen only, on the remote computer, or on the client.
I generally use Terminals[^], and the Windows key combinations just work.
The only key combination that doesn't normally get passed to the remote computer is Ctrl + Alt + Del - most clients use Ctrl + Alt + End instead.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Hi All,
Regulars will know of my current employment situation (or lack there of!). So I have been applying to various jobs and got an Email from Nine# (?) anybody know anything about them as according to there web site "They get jobs before there advertised" which makes me think my details would be launched as some sort of spam to there recruitment department. Which might cause a few problems if I went the standard way. Anybody had experience of them at all, are they any good. I'm bored! 
Also anyone seed Darlek Dave!
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glennPattonPUB wrote: They get jobs before there advertised
If they cannot use they're correctly in their communications, they are suspect IMO.
You can lead a developer to CodeProject, but you can't make them think.
The Theory of Gravity was invented for the sole purpose of distracting you from investigating the scientific fact that the Earth sucks.
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Should use theiy're to be on the safe side
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