## Magical Math Humor

Hello, how are you?

There are amazing secrets or magic in mathematical numbers such as 1, 11, 111, …., 111111111, 8, and 9,  etc.  The following is one of those.  Hope that math fans or those who are interested in math teaching and learning enjoy it.

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1 x 8 + 1 = 9

12 x 8 + 2 = 98

123 x 8 + 3 = 987

1234 x 8 + 4 = 9876

12345 x 8 + 5 = 987 65

123456 x 8 + 6 = 987654

1234567 x 8 + 7 = 9876543

12345678 x 8 + 8 = 98765432

123456789 x 8 + 9 = 987654321

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0 x 9+1=1

1 x 9 + 2 = 11

12 x 9 + 3 = 111

123 x 9 + 4 = 1111

1234 x 9 + 5 = 11111

12345 x 9 + 6 = 111111

123456 x 9 + 7 = 1111111

1234567 x 9 + 8 = 11111111

12345678 x 9 + 9 = 111111111

123456789 x 9 +10= 1111111111

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9 x 9 + 7 = 88

98 x 9 + 6 = 888

987 x 9 + 5 = 8888

9876 x 9 + 4 = 88888

98765 x 9 + 3 = 888888

987654 x 9 + 2 = 8888888

9876543 x 9 + 1 = 88888888

98765432 x 9 + 0 = 888888888

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1 x 1 = 1

11 x 11 = 121

111 x 111 = 12321

1111 x 1111 = 1234321

11111 x 11111 = 123454321

111111 x 111111 = 12345654321

1111111 x 1111111 = 1234567654321

11111111 x 11111111 = 123456787654321

111111111 x 111111111 = 12345678987654321

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Take a piece of paper from your computer printer, 8.5*11 in size, you agree that there are four (4) corners for the paper which is rectangle shape, now take a scissor and cut one (1) corner off the paper by straight line (only once for each result), how many corners left on the remain paper?

Very easy if you actually do it!

Only a tiny trick in it, Good Luck!

Happy Saturday Evening!  😉 🙂  😉

PS: You can also fold it for one time to get a result, there are two solutions,

If you divide the rectangle into exactly two equal pieces of triangular paper, then you get 4-1=3, 3 corners,

But if you cut out one corner and get two pieces of paper, with a small triangle removed, you get 4-2=5 corners,amazing math humor, isn’t it?

Good job, everyone, everyone got 5 corners, the other case is a trick, as I mentioned…;) 🙂 😉

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Math Posts in Blogs:

Childish Sweetheart:

http://kumikomae.blogspot.com/2010/01/math-equations-humanity.html

Richard Wiseman Blog:

http://richardwiseman.wordpress.com/2010/01/15/its-the-friday-puzzle-42/

Math teacher: http://manlovesmath.blogspot.com/

Math Baseball: http://www.funbrain.com/funbrain/math/

Math faculty in California: http://eaglebach.wordpress.com/

Problem of the Fortnight: http://eaglebach.wordpress.com/2009/10/26/problem-of-the-fortnight/

That little Notebook’s Weblog : http://thatlittlenotebook.wordpress.com/2010/01/16/my-brothers-wisdom/

Math humor:

http://www.xkcd.com/179/

## Do You Do Mind Mapping?

What is Mind Mapping? Do you do mind mapping? How often?

Do you recall that in your office, your garage, or your kitchen, you have a special space that is filled with “junks”, and these stuff could be left over strings, used tapes, bolts, crayons, batteries, pencils, happy meal toys?…you know these little thing very well when you toss them in, you promised yourself that you will need them soon. But as time passes, the space is packed full and it does not look good when you look at the piles.

What do you do when this junk drawer gets full? You dump them out on the floor, take a look at them one by one, trash some without feeling sad, and put rest of them back in a more favorable fashion…then you feel better about this new organization, right?

Now, what is mind mapping? Why shall you mind mapping and how?

Our brain is like the junk drawer above, we intake all sorts of information on daily basis and not all data are useful for our thinking or growth. Mind mapping is how you empty out what’s crammed inside your craniums to rest your body and mind. Mind mapping implies that you let go of the things that are less critical to your development, after you are done, you are rested, refreshed, and ready for new challenges again.

One example for mind mapping is, when you are bothered by something, you write things down on a piece of paper, and brainstorm all the things connected to the issue and possible solutions you believe, and you write until you are empty inside. Then you move on to do something else. After you cool off, come back and read the reflections you have early. Categorize the things over there, focus on what’s most important and ignore the rest.

I always feel amazed about how deep my thinking has gone when I let my emotions and wisdom flow out as needed. I believe that mind mapping produces critical thinking skills, which is key to one’s success in life.

Make A Wish

Like A fish,

Swim,

Be Cool.

If you prefer whales to sharks,

Move on, and