## Martin Gardner article in NY Times

A nice NY Times article about Martin Gardner.

…Mr. Gardner was 42 and had never taken a math course beyond high school. He had struggled with calculus and considered himself poor at solving basic mathematical puzzles, let alone creating them. But when the publisher of Scientific American asked him if there might be enough material for a monthly column on “recreational mathematics,” a term that sounded even more oxymoronic in 1956 than it does today, Mr. Gardner took a gamble.

Martin Gardner’s 95th birthday was just over a month ago (born October 21, 1914). Dang that’s old! The article goes on to talk about his life and achievements.

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## Pi explaination

This is neat hahaha… No idea where it came from. It says gifbin.com on the image though

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## Silly blackboard picture

I call fake!! Looks pretty sweet though!

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## Bing does your math homework

Let Bing.com (Microsoft’s search engine) do your math homework!!

Typing”x^2 + 2x + 1 = 27″ into the search engine produced the two solutions above! Sweet.

You may ask why/how? What’s behind this? The answer is… none other than…
Wolfram|Alpha, and the recent deal they stuck with Microsoft.

## Math Sign Fail

What does stumulus mean? Anyone? Cricket…

There are:

365.242199 days per year

And multiplied by 2206 years gives:

365.242199 x 2206 = 805 724.291

Multiplied by \$1,000,000 gives:

\$805, 724, 291, 000.

Well, the guy is right. I’m definitely stumuled.

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## Cool math art

Minnhagen on deviantart.com drew the picture above. I thought it was pretty cool looking

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## Do the math – weightloss

Want to lose 10 pounds within two months? All you have to do is the math!!

My simple 5 step program is flawless I tell ya, FLAWLESS!

1. Multiply the number of pounds you want to lose by the number of calories in a pound of fat.
3500 calories in a pound of fat

So, if you want to lose 10 pounds, it comes out to 35,000 calories.

2. Divide this total by the days you will be on the diet. This will give the deficit you need to create in your diet. In our 2 month program example, we will do:

Deficit = 35,000 ÷ 60 = 583.

3. Calculate your Basal Metabolic Rate using the formula below:
For Men:
BMR = 66 + (13.7 X wt in kg) + (5 X ht in cm) – (6.8 X age in years)

For Women:
BMR = 655 + (9.6 X wt in kg) + (1.8 X ht in cm) – (4.7 X age in years)

Conversion:

1 inch = 2.54 cm.
1 kilogram = 2.2 lbs.

Legend:

wt = weight.
ht = height.

For example, my BMR is equal to 1730.

4. Calculate your total daily energy expenditure (TDEE) by multiplying your BMR by your activity multiplier from the chart below:

Activity Multiplier
Sedentary = BMR X 1.2 (little or no exercise, desk job)
Lightly active = BMR X 1.375 (light exercise 1-3 days/wk)
Mod. active = BMR X 1.55 (moderate exercise 3-5 days/wk)
Very active = BMR X 1.725 (hard exercise 6-7 days/wk)
Extr. active = BMR X 1.9 (hard daily exercise & physical job or 2X day training, e.g. marathon)

So, TDEE = BMR x (number from above).

For me, TDEE = 1730 x 1.375 = 2378.

5. Then use the formula:
Allowed Calories Per Day = TDEE – Deficit

Now, over the 2 month period, simple consume only the allowed number of calories.

For me, Allowed Calories Per Day = 2378 – 583 = 1795. Thus, for me to lose 10lbs over the course of 2 months, I would need to consume roughly 1800 calories per day (and NO MORE). I tried it out and it worked for me (the math does not lie!!).

Remember to eat low calories foods whenever you can. Substitute light beer for regular beer, if you HAVE to drink beer. Eat “sugar free” jello, as its only 5 calories per cup. Celery is practically 0 calories. If you have to drink soft drinks, choose diet, as it’s only 2-3 calories per can. Take just milk in your coffee, no sugar (or drink it black as it’s then essentially 0 calories). Drink lots of water, LOTS. You don’t have to lay off the fast food, so if you’re eating out, try to look at the number of calories in some of the meals and compare. Choose the lowest. You can go to burger king and eat an entire fast food UNHEALTHY meal for a total cost of 500 calories in your diet. That’s pretty good, because then you’ll still have 1000+ calories to consume for the day. (Though, I don’t recommend eating fast food all the time arrg).

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## Math counts – spelling doesn’t

MATHCOUNTS in North Carolina

This presentation will present a status report on MATHCUNTS in North Carloina…

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## Solving in Wolfram Alpha

If you want to solve an equation in WolframAlpha simply type:

Solve 3×2+x-7=4x

The neat thing here is that not only will WolframAlpha solve the equation, but it will also show you the steps!! Although, throwing in absolute values is going to confuse some of the students, since a lot of them don’t know that:

sqrt ( x^2 ) = | x |

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## Counting By Ones Song

It doesn’t take much to entertain me these days…The website called Have Fun Teaching has a song called “Counting by ones”, where essentially they do exactly that. They count from 1 to 50 lol. It’s rather catchy and supposed to be for kids, but so far I’ve listened to it multiple times!!
Lyrics:

Here we go sing it loud, we’re counting by ones
Try and keep up, we’re having so much fun
We’re starting at one and counting all the way to fifty
Now don’t skip a number when you’re singing with me

One, Two, Three, Four, Five
Six, Seven, Eight, Nine, Ten
Eleven, Twelve, Thirteen, Fourteen, Fifteen
Sixteen, Seventeen, Eighteen, Nineteen, Twenty
Twenty One, Twenty Two, Twenty Three, Twenty Four, Twenty Five
Twenty Six, Twenty Seven, Twenty Eight, Twenty Nine, Thirty
Thirty One, Thirty Two, Thirty Three, Thirty Four, Thirty Five
Thirty Six, Thirty Seven, Thirty Eight, Thirty Nine, Fourty
Forty One, Forty Two, Forty Three, Forty Four, Forty Five
Forty Six, Forty Seven, Forty Eight, Forty Nine, Fifty

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