Live data from Hacker News

Do the math: too much calculus? (2012)

washingtonpost.com

11–20 of 220 posts

Re: Do the math: too much calculus? (2012)

#11

AP Calculus was the most useful course I took in high school. It was rigorous, and I scored high enough on the exam to get two free college classes and start freshman year at the sophomore level, which left room at the end of my college career for more specialized courses. There should be some vetting process for the students who want to take AP classes. A lot of the students in my AP Calculus class had no business b…

Isn't it kind of weird that a college won't let you take whatever math class you want?

Re: Do the math: too much calculus? (2012)

#12
It sounds like the issue is there are too many high schools offering classes in AP calculus which don't do a decent job of actually teaching the concepts to the students. Having a good teacher for these classes makes all the difference. Additional testing at the college level would help assess a student's ability level but it does not solve the problem of time wasted when the course must be retaken.

Another issue this brings up is it causes a larger gap to form between trigonometry and calculus 2. Where memorization of hundreds of trig identities builds on top of the identities learned in trig. If a student takes Trig -> pre-calc->AP calc -> Calc 1 -> Calc 2 They will have a much harder time in Calc 2. That is what happened to me. I had to take Calc 2 a couple times before I got it sorted out.

http://www.ansep.net/programmatic-outcomes/statistical-data

I think the answer is to get more qualified teachers in the schools teaching the AP level classes. There is a program in Alaska called ANSEP (Alaska Native Science and Engineering Program) who have this figured out. Middle school students who enter the program come to the university during the summer time and take math classes from university professors. Many of the students are completely finished with their math track (for engineering programs) before they start university their freshmen year. These kids are all the way through partial differential equations at 17.

The graduation rate for ANSEP students who enter engineering programs is around double the national average. There are many other important aspects to it. Including mandatory study sessions and living with other students who are also taking the same classes. Students are also given well paid internships in the industry during the summer time. When looked at as a whole, there is no doubt that they have figured out a far more effective means for getting students through STEM programs and jobs once they graduate.

Full Disclosure: I am good friends with a few of the people running this program.

Re: Do the math: too much calculus? (2012)

#13
For lower level math, my kids seemed to revisit the same subjects over and over from k-9th grades. For example, mean, median and mode, year after year. The first few years it was just robotic problem solving. After a few years, they started to get a broader understanding. Maybe some people need to take several passes through the higher level stuff too.I guess the problem is that there is not enough time.

Re: Do the math: too much calculus? (2012)

#14
post #11

AP Calculus was the most useful course I took in high school. It was rigorous, and I scored high enough on the exam to get two free college classes and start freshman year at the sophomore level, which left room at the end of my college career for more specialized courses. There should be some vetting process for the students who want to take AP classes. A lot of the students in my AP Calculus class had no business b…

Isn't it kind of weird that a college won't let you take whatever math class you want?

No. Tuition only covers a portion of a student's cost to a university. I think it's around 30% at mine.

1) If a class is way over your head the university is wasting money having you there.

2) Having stragglers in the class that are far behind slows down the whole class.

3) Every seat that is filled with a student who is not ready for the class is a seat that can't be filled with a student who could actually pass it.

Re: Do the math: too much calculus? (2012)

#15
post #11

AP Calculus was the most useful course I took in high school. It was rigorous, and I scored high enough on the exam to get two free college classes and start freshman year at the sophomore level, which left room at the end of my college career for more specialized courses. There should be some vetting process for the students who want to take AP classes. A lot of the students in my AP Calculus class had no business b…

Isn't it kind of weird that a college won't let you take whatever math class you want?

Exactly!

Re: Do the math: too much calculus? (2012)

#16
post #11

Earlier quoted context omitted.

Isn't it kind of weird that a college won't let you take whatever math class you want?

No. Tuition only covers a portion of a student's cost to a university. I think it's around 30% at mine. 1) If a class is way over your head the university is wasting money having you there. 2) Having stragglers in the class that are far behind slows down the whole class. 3) Every seat that is filled with a student who is not ready for the class is a seat that can't be filled with a student who could actually pass it.

> Tuition only covers a portion of a student's cost to a university. I think it's around 30% at mine.

Where are you getting that from? Are you just dividing the tuition revenue by the university's budget? Because the university is there for a lot more than educating undergrads.

Re: Do the math: too much calculus? (2012)

#17
Personally, I have always wondered about the prominent position trigonometry and geometry get.

As it is typically taught, it is the most useless thing, the time spent there would be much better spent on algebra, calculus. From basic theorem of algebra flows trigonometry and a lot of number theory, while from calculus with some linear algebra flows geometry.

The rationale is probably history.

Re: Do the math: too much calculus? (2012)

#18
I think linear algebra is a much more valuable and general-purpose math tool. I'm not sure how feasible it would be to teach linear algebra topics "properly" to high schoolers, but even a half-assed linear algebra would be more useful than calculus.

The connections to geometry, general systems thinking, formal math methods, and countless applications of linear algebra are just the kind of thing students need to get them interested in learning more math.

Anyone interested in LA an its applications should check out my upcoming book, the No bullshit guide to linear algebra availale on pre-order here https://gum.co/noBSLA (it's almost finished; just beefing up the problem sections).

Re: Do the math: too much calculus? (2012)

#19
post #6

I think we teach Calculus wrong in a deep fundamental way. We should incorporate more high math concepts earlier into education BUT people are always afraid of anything past 4th grade math! "A minority of students then wend their way through geometry, trigonometry and, finally, calculus, which is considered the pinnacle of high-school-level math. But this progression actually “has nothing to do with how people think,…

I would have done much better in math if the class after Geometry was something other than pre-trig.

Re: Do the math: too much calculus? (2012)

#20
Terrible teachers making difficult subjects impossible for students.

It's the same experience for my kids that I recall from my time. Industry can pay more, and outside the rare person who has come to teaching to give back, the instructors are those who can't.

Even when I was at Cal Poly, the only instructors in eng/sci who I recall being helpful were those from JPI that would come in and teach a class or two. One taught us three classes worth of material in course when he realized how much we had missed from our previous instructors.

Post reply on HN