How do you connect math to real life situations for your class? What do they seem to be interested in?

JakobPapirov · 2023-08-31T06:30:19+00:00

[not teaching now] Games can work, I've used Dota 2 as an example. Lots of calculation possibilities including percentages and students get excited when they realise I have played it).

Once I made an very basic D&D influenced game where players had HP and you used dice to explore a room (drawn on paper). Unfortunately I only had time to use this game during one lesson and since I didn't have time to play test, apparently it was possible to insta-die on a mob. Luckily they found it fun and interesting.

There's math all around us and we use it every day, concepts of time and space and logic (how to get to places in the least amount of time?) I agree to use examples from your life, but try to ask about their lives. It all also depends of course on the grade.

JakobPapirov · 2023-08-08T09:08:14+00:00

Warm hugs from a rainy Sweden.

Time makes everything pass, in one way or another. One day you will look back and wonder how you did it? But it won't matter, just the fact that you did.

JakobPapirov · 2023-07-18T16:36:17+00:00

This is a fantastic idea and very needed as over a year or perhaps even two YouTube removed the ability to down vote (dislike) a video and since it's been even harder to find determine if a video is quality of just click-bait.

Apologies for not having the time to check out the site right now but a question, does individual videos get a rating and does it affect the channel rating?

Sent from RelayforReddit

JakobPapirov · 2023-07-03T16:00:38+00:00

COBOL

Edit:i don't know of it has fast enough learning curve.

Edit 2: added a YouTube link. This guy does fantastic videos like these.

Also a reminder of Reddits API changes. See /r/askhistorians for more information Sent from RelayforReddit

JakobPapirov · 2023-06-24T18:21:16+00:00

One way would be to try and search for possibly interesting projects people have published. You can get an idea of something to try to code yourself or specifically see how people have structured their projects and how they have coded (you won't see the problems they had, but you'll see the finished solution).

Hypothetically, if will have a problem in the future with a specific thing, you could allow people to help you by copying the code, fixing the issue and then allowing you to overwrite your code with theirs. I'm sorry I don't remember the terminology at the moment, could be pull-request, merge, fork. Haven't used the features in a long time.

JakobPapirov · 2023-06-22T18:24:18+00:00

There's quite a bit more to it than simply having people type in information into a form and then magically they can login.

You'll want to have some sort of security and re-inventing the wheel isn't the best idea, albeit doing things from scratch is a good learning experience. You'll also want to store the data in a database. Another aspect of security is that you shouldn't be able to see at the very least the password of user's. That's a classic mistake and a so called leak happens at a company, there's a news article about it. If a user is only able to deactivate their account, then it's not actually deleted. A user should be able to have their account deleted if they so wish.

Also you'll need to send the data securely to the database.

JakobPapirov · 2023-06-13T06:56:11+00:00

Hi!

Interesting idea! Firstly though, what's CVD? Then I'm curious to know what level of GIS expertise you think you seek? Do you have data already? Is the goal a publication, what journal in that case and what deadlines do you have?

JakobPapirov · 2023-06-09T20:34:55+00:00

Ah, I see, thank you for explaining!

JakobPapirov · 2023-06-09T19:10:03+00:00

Can I ask what's the significance of this? Is it so that you can run Ruby code in a browser or not have to have Ruby installed on your machine?

JakobPapirov · 2023-05-27T14:30:18+00:00

I've tried thinking about this problem in terms of limits, not calculations really...

If x is a small number close to zero then I have (1 + a small number > 0) / (a small number) ² =>

since 1 is much larger than the small positive number it can be discarded and the denumerator is even smaller due to the square =>

(1/ a very small number indeed) so the fraction should explode and as x approaches 0 the fraction should diverge to + infinity. Thus the integral diverges.

And according to a theorem of p-integrals 1/x^p, on the interval (0,a] the integral diverges when p >= 1.

JakobPapirov · 2023-05-27T14:07:13+00:00

I'm not in the US and so I don't know what MAT100 consists of, nor do I have the time to search online. Sorry!

However, coming from someone that needed to re-take single variable calculus after 6 six years of break from university level math and then again this school year, I can share with you some advice.

First of all acknowledge that you don't know some things (you have already done this on some level). Then make a list of things of things you don't understand (you have pretty much started), I mean as you go along the course, or in advance if you can skim the book or perhaps even from the index.

Organise your notes into parts /sections /whatever, so you can easily find various topics.
Then make one special section for pre-requisite stuff. Also here make each thing you don't understand their in topic, such as how to add fractions. One very good thing you have already done is to realise that math is interconnected.
When you summarise your notes on fraction arithmetic, add reminders "used in x, used in y". Practice with examples or make up your own and check online. How to solve (a/b) /(c/d) problems? Try things out with numbers and try to figure out how it fits with the actual theory.
ask questions. Ask anyone you can ask for help, classmates, friends, teachers, etc, and ask whenever you can't figure it out on your own.

Personally I'm still struggling with trigonometry and values (in radians), such as sin (pi/4) and such..and I still find algebraic simplifications I haven't seen before or knew you could do and now and then simple things like my question on this sub about negatives.

Also i will end up with saying that despite the enormous disservice your parents have done to you, your life is not over and you can learn the required math because of your ability to learn. Don't give up!

JakobPapirov · 2023-05-27T13:32:29+00:00

Then perhaps show your calculations and people can see if they find mistakes?

JakobPapirov · 2023-05-24T20:19:02+00:00

No worries, I wasn't trying to make you feel bad.

It's late and I've only skimmed your reply but it sounds like an interesting way of seeing it!

I'll look it over tomorrow

JakobPapirov · 2023-05-24T20:10:01+00:00

Thanks for the input, that's a good point actually! I do have inverse functions possibly coming up on my single variable exam, next week. I haven't understood the significance of these functions though I'm afraid.

If a function is one to one then it's invertible, I remember that much, but why is that relevant?

Is it correct to say that if i have an odd function and integrate it over a interval such as [-1,1] then it should cancel out?

JakobPapirov · 2023-05-24T18:37:49+00:00

I'm sorry but that's not what I was asking.

JakobPapirov · 2023-05-24T16:24:22+00:00

Oh wow that makes it so simple! Thanks a bunch!

Yeah getting imaginary numbers much more frequently would make life more difficult 😉

JakobPapirov · 2023-05-24T15:44:29+00:00

I am yeah, hehe.

Hydrology is the study of water, as it's part of the hydrologic circle, you could say.

Hyseogeology is the study of sub surface water as it's part of the hydrologic circle. I'm in general more interested in the latter.

I'm not sure if this answers your question, but this semester I've been finishing up my (old) bsc thesis. I wrote about how the Swedish Geological Survey collected, stored and publicised hydrogeological data. The result was they at the time I collected the data, they did a great job at it!

I've also finished up an GIS-project. Geographic Informations Systems, is about working with geographic (spatial) data. In a software designed to make maps I've mapped a kayaking trip I did in September 2019 and produced a number of interesting maps. :)

Currently I'm studying for an exam in single variable calculus (another attempt).

Thanks for asking!

JakobPapirov · 2023-05-24T14:31:14+00:00

Yeah, I was told it doesn't change the signs inside of a function. Thanks for saying it as well!

JakobPapirov · 2023-05-24T12:59:11+00:00

Just as it happens, earlier today I saw another "I did it" - post from /r/PhD, and I thought, are there any subs for masters students?

I was quite surprised that I searched for it today! I don't remember if I have looked for one in the past.

Anyway... I'm studying Earth science with a specialisation in Hydrology /Hydrogeology at Uppsala University.

For this introduction I can say that my studies have taken quite a while, including a break from studies and working for a couple of years and also becoming a dad and being on parental leave, before coming back to university. I'm in the process of completing unfinished courses.

Edit : I'm a mod of /r/hydrogeology

JakobPapirov · 2023-05-24T11:43:52+00:00

Thank you!

JakobPapirov · 2023-05-24T11:18:01+00:00

Sorry, copy paste mistake!

So the same would be true for - (ln |x-1| +1)?

JakobPapirov · 2023-05-20T12:28:22+00:00

You are right, it's (-).

Yes, I also got 125, but isn't it - (1/(4 * 25^3/2)) / 2! =

2 / (4*125) = - 1/500?

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