Pizza math

[Dan in MI]

Hi,

P=IE

Heard that somewhere. HS physics?

Rick C

Watt are you talking about?

 

[Colonialgirl]

And Wednesday is FREE PIE day at the Village inn, but NOT with a breakfast.

 

[gjgalligan]

Now 5 divided by 8 = .625 move the decimal place over 2 you ate 62.5% of the pizza.

.

I never thought of moving the decimal point to get the %.
Thanks for teaching me something.

 

[LDM]

Then there's the story of the two guys that go into a pizzeria. They order a pie and the one guy says he wants it cut into six slices. The other guy asks why? Because list time it was cut into eight slices and we couldn't eat it all.

 

[Rick Courtright]

Watt are you talking about?

Hi,

Watt's on first.

Rick C

 

[hpman66]

Just order thin and deep dish. More basis for pizza being the perfect math tool.

Hi,

But how do you handle figuring the area of a circle? Here the student is looking at a round pie while the instructor's telling him "pi r squared"--confusion, confusion?

Rick C

I don’t know if I made this up or it’s a real episode? If someone taught me I don’t remember it. Has anyone heard this one before?

To teach the formula:

Break out your best 3 stooges voices. Use your imagination.

Larry. Hey Moe what’s the formula for area of a circle?

Moe. Pie are squared, stupid!

Curly. No they’re not! Pie are round! Nyuck, nyuck, nyuck!

Make a motion like Moe poking curly in the eyes.

Nobody ever forgets that formula after that!

In case anyone doesn’t know.

Take any circle divide the circumference by the diameter. It always equals pi. Which is approximately 3.1416, every time no matter how large or small the circle is! How cool is that?

To remember a number like pi, I just repeat it over and over again. Out loud or in my head. While I’m doing something else menial.

Pi day, March 14th has taken on an almost holiday status among nerds the world over.

Pie day is January 23rd

Here’s how Justin Wilson explained it back in 2007: :mrgreen:

https://m.youtube.com/watch?v=uEMpxyE8Nzk

 

[eveled]

Now 5 divided by 8 = .625 move the decimal place over 2 you ate 62.5% of the pizza.

.

I never thought of moving the decimal point to get the %.
Thanks for teaching me something.

That’s a neat trick, isn’t it? You are very welcome of course.

Thanks hpman66 that was a hoot.

 

[rugerguy211]

Albert Einstein: “Never memorize something that you can look up.”

 

[eveled]

That’s the worst of it. Life is an open book test. But the license test no books are allowed. So they have to remember the formulas and such after the test they can forget it. Then look it up if they ever need it.

 

[blume357]

Albert Einstein: “Never memorize something that you can look up.”

I have all those formulas in my note book I carry with me every day....

circumference of a circle
area of a circle
diameter...

even volume and surface are of a cylinder...

 

[JFB]

my introduction to machine design course was pure equations, writing the equation of movement/force for many devices and for most devices there would be a common equation.

for exam, the class asked if we could use notes of those common equations. professor said he would give us a "cheat sheet" with what we could them derive the answers.

That sheet had . . .

F=mA

 

[Skoopski]

Don't even get me started on "Common Core" math other than to say I sure won't be able to help my Grandsons when they start taking it.

They taught that at my sons school for a year and went back to regular math the next. Friend I went to high school with teaches math there and confessed to me fishing one day that he didn’t even know exactly how to teach it because it didn’t make sense to him.

 

[eveled]

Years ago I worked with a guy who could do math in his head faster than I could use a calculator or pen and paper. He said he had tricks that he used. It involved grouping numbers and adding the groups. It was incredibly confusing (to me) but worked for him. He kept saying it’s easier than the regular way and that the regular way made him confused, so he made up the tricks.

At the time I realized there were two ways to look at math, some people “got it” one way some people “got it” the other way. I think it’s a left brain right brain thing. Nobody “gets it” both ways. You are either right or left brained.

25 years later I realize what Mitch did way back then is called new math. Someone in charge of the math education thought that “Mitch math” was easier and shoved it down our kids throats and left us behind. The problem is that it’s only easier for some people. People who think like Mitch.