“I hate fractions.”
“They probably hate you, too. The question is, which one of you will be master.”
— Jonathan, jd2718
“I hate fractions”
Quotations XXIV: Probability
[Photo by Micah Sittig.]
I used to fill the margins of my math newsletter with quotations and tidbits of math history. Here are some quotes from the July/August 1999 issue on probability, along with a few others I’ve stumbled on while browsing the internet.
No knowledge of probabilities helps us to know what conclusions are true. There is no direct relation between the truth of a proposition and its probability.
The 50-50-90 rule: Anytime you have a 50-50 chance of getting something right, there’s a 90% probability you’ll get it wrong.
What a Teacher Wants To Hear
I finally get it — you don’t have to worry about memorizing a bunch of formulas if you just understand where they come from. You can always figure them out again.
— unidentified student in Doug’s class
from the comments on Kate’s post Formulas? What Formulas?
Quotable: Teaching
Teaching any subject has a funny way of educating the teacher at least as much as the student.
— Chris Birk
How I Became a Better Writer Thanks to Distracted, Hungover College Kids
We all know it already, but I like the way he said it, and the blog post is worth reading. I wish this guy was teaching my college kids. Heck, my college kids wish he was teaching them — or at least, they wish that their teachers valued tight writing and would “coat undergraduate papers in ink.”
Quotable: Make Them Laugh
You have to make them laugh. You must never underestimate the power of laughing in a maths classroom.
— Carol Roberts
quoted in Laughing lesson Adult learning
Or, as Donald O’Conner put it:
I think this is my biggest failing as a teacher: I am too much the straight man.
Quotable: Problem Solving
I do my best to make my students think, but they still try to become good little algorithm followers.
Quotable: College Majors
Discovered this in my blog reader this morning, and I thought you would enjoy it, too.
[Note: Stu is not the person’s real name, but is short for “student.”]
Stu came to my office looking for a new major. Stu is bad at math and can’t handle the math sequence required of business majors. So Stu was wondering what majors require the lowest level math sequence that counts towards graduation.
I listed a few.
Stu was disappointed. Stu pointed out that you don’t usually think about people in those fields as making a lot of money. Stu lamented that everything that is in demand requires math.
— Rudbeckia Hirta
Learning Curves blog
Quotable: Politics
“Let’s give the governor a break,” says Williams College mathematician Edward Burger. “If nothing else, he’s encouraging math education.”
— Carl Bialik
Coincidental Obscenity Deemed Extremely Dubious
Free: Calculus Student’s Best Friend
Considering how many fools can calculate, it is surprising that it should be thought either a difficult or a tedious task for any other fool to learn how to master the same tricks… Being myself a remarkably stupid fellow, I have had to unteach myself the difficulties, and now beg to present to my fellow fools the parts that are not hard. Master these thoroughly, and the rest will follow. What one fool can do, another can.
For years, I have recommended Calculus Made Easy as summer reading (and future reference) for high school or college students headed into a calculus course — and for the parents of those students, who may have studied calculus in ages past and now need to dredge out the dust bunnies of memory so they can help with homework.
The original book (second edition) is now out of copyright and available for free online:
- Calculus Made Easy [pdf, 11.4 MB]
[Hat tip to Sam and Michael for finding the Scribd version, which set me off searching for a clearer copy.]
Math = Letting Dead People Do the Work
WordPress.com bloggers have a new toy: the ability to embed TED talks…
Denise Gaskins' Let's Play Math 