Continuous Everywhere but Differentiable Nowhere

As you might know, this summer I’m prepping for the multivariable calculus course I’m teaching next year. When going through the textbook, I’m attempting some of the “challenging” problems near the end of the section. 
Today, when refreshing myself with the chain rule, I came across a problem which tested my intuition. And I’m afraid I’ve [...]

How the heck in the n-dimensional universe did I miss this? I need to get on this, STAT!

I read the book a long time ago, but I remember it being about gender in the Victorian era. And math, of course. Am I totally wrong about this?

Today there was an Earthquake in Southern California. A NYT article said:
The quake, estimated at 5.4 magnitude (reduced from an initial estimate of 5.8), was centered 35 east of downtown Los Angeles in Chino Hills, just south of Pomona in San Bernardino county. It was felt as far east as Las Vegas and as far [...]

I was downloading something yesterday and noticed that my downloading program tells me the download speed, and it updates it every half second or so. It also tells me how much of the file I’ve downloaded, total (e.g. 29.6 MB out of 64 MB, 46.3% completed). 
This is a perfect example of integration as accumulation! The [...]

My sister told me this physics problem, and I have no idea how to solve it. It goes like this. There are two identical balls, one lying a distance x from the edge of a frictionless table, and the other being held up in the air, a distance x from the edge of the table. [...]

It seems I was scooped.
In my ongoing obsession with the law and math (see post I and post II here), I learned that for many years, all the supreme court justices shake hands before each meeting.
The “Conference handshake” has been a tradition since the days of Chief Justice Melville W. Fuller in the late 19th [...]

I was so enthralled with Judge Sand’s city of Yonkers case that I couldn’t help but do a little more research on him. And lo and behold, nary a page in from a google search, I found another case that deals with math!
The setup
Henry Barschall, working for the American Physical Society and the American Institute [...]

THE PROBLEM IS HERE!
In the Quach family, there is an age-old tradition that has been intact since the 1500s. In this tradition, every member of the Quach family receives one lottery ticket for his/her first 25 birthdays.
Based on empirical data collected over the years, it was determined by the family Mathematician that the probability of [...]

I can’t help it… I have to post about this… jd2718 led me to a blog which is so awesomely captivating that I just spent the last hour reading like a zillion postings…
It’s not all flowers and sausages
It chronicles all the funny, frustrating, quotidian things teachers go through… you know what I’m talking about… there are [...]

Out of this list of 1001 books that one ought to read (from this book I guess), here are the ones I have read… about 5.1%. My favorites are marked with a *.

The Curious Incident of the Dog in the Night-Time – Mark Haddon
Middlesex – Jeffrey Eugenides
Choke – Chuck Palahniuk
Blonde – [...]