Mathematics

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In this group, people can come together to talk about insightful math problems and learn to love math. It is also a place to share various math contests, events and programs that could be of interest for students and teachers.

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Hi!

Does anyone know organizations that tutor AP Stat or someone who would be able to tutor me?

I'm having trouble understanding some things in AP Stat and would like help with homework problems. I'm in 11th grade and most of the organizations I've found only teach students younger than me.

If you wouldn't mind helping me with AP Stat, I'm in EST and would want help once or twice a week on weekends. We can meet over google meet or zoom or whatever platform you'd like.

Or if you could recommend some student organizations that tutor AP Stat, I would also be grateful. Thank you so much!
You can learn the topic you like and tutor others with the topic you know as a volunteer. Also there's a certification system where you can get certified for completing Khan Academy Unit tests, which helps in adding it to your resume. They'vw also patterned with UChicago's admission team, that you can use the certificates in your application to UChicago
So for AP Stats, you can signup in this link and then you'll get access to their forum where you can request sessions on topics of your interest
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That sounds great. I'll definitely look into that. Thank you so much!
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Hi everyone!

My name is Minseo Kim, and I am the COO of InterSTEM, a non-profit organization that aims to promote the understanding of STEM-relevant topics globally.

We are currently organizing a student-run research program, a unique opportunity for students to explore and dive deeper into the world of STEM. There will be four research teams, each consisting of 5-7 high schoolers and in charge of different research topics (physics, biology, data science, machine learning, etc). There will also be opportunities for you to work with different college/university professors. Most importantly, you don't need to have prior research experience to join the program. If you are interested, please fill out the application here: forms.gle/... 7GnA5aGXeA

If you have any questions or concerns, please contact interstemresearch@gmail.com. Thank you in advance, and we look forward to working with you!
Hi everyone! My name is Minseo Kim, and I am the COO of InterSTEM, a non-profit organization that aims to promote the understanding of STEM-relevant topics globally.

We are currently organizing a student-run research program, a unique opportunity for students to explore and dive deeper into the world of STEM. There will be four research teams, each consisting of 5-7 high schoolers and in charge of different research topics (physics, biology, data science, machine learning, etc). In addition to regular team members, each team will have one team leader who must have enough research experience in whichever topic they are confident in and have the ability to lead the project. If you are interested in this team leader position, please fill out the application here: forms.gle/... SHuKZHXaM8


For questions and concerns, please contact interstemplatform@gmail.com. Thank you in advance, and we are extremely happy to work with you!
I am interested
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Here is the new link to the application:forms.gle/... 6YeMtpERG6
Hi everyone! My name is Ryan Liu, and I am the CEO of InterSTEM, a non-profit organization dedicated to expanding access to STEM education in underprivileged communities and fostering a genuine passion for the sciences. InterSTEM is composed of four main sectors: a tutoring service for students of all ages in subjects ranging from counting to complex analysis, a blog where writers utilize STEM to educate readers on current events, a research mentorship program, and various events such as hackathons and research symposiums.

Currently, our organization is based in Southern California, but we hope to expand across the country and internationally. Although we are still a new organization (we launched last week!), we already have over 50 members from across the U.S. and have been receiving lots of positive feedback in our communities. If you would like to get involved, please comment below or shoot a message to interstemplatform@gmail.com. Additionally, you can find links to our website, volunteering opportunity applications, and our discord server at this link: https://linktr.ee/interstem . Regardless of your strengths and passions, we will be extremely happy to work with you. Thank you in advance!
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When choosing which SAT II subject tests to take, students have the choice to take the Math 1 test, the Math 2 test, or both. This video will tell you why that when considering these options, you shouldn’t even bother considering the Math 1 test.
www.youtub... e=youtu.be
Amazing article for math enthusiasts! You don't always need to start early.
www.quanta... l-20180801
If you want a sneak peak at college classes, this video will review Harvard Class Math 1B: Calculus, Series, & Differential Equations, the rough equivalent of AP Calculus BC.
www.youtub... c7gkQsO9-8
Hello Math Buddies
I’m taking advanced honors pre calc next year. What should I expect?
A lot of work... but still not as much as AP - if you are comfortable with most concepts now you should be fine
My class started out with some review of Algebra II concepts which helped ease us into new topics. I enjoyed the class a lot!
Hello all,
I am looking into starting an international math-competition. I am looking for partners who have had experiences in being part of or organizing math competitions or large-scale events. If interested please email me at s-tmehta@lwsd.org
See this organization we have on RoundPier www.roundp... ernational youth math challenge
This video will review Harvard Class Statistics 104, Introduction to Quantitative Methods for Economics, commonly nicknamed Frat 104.
www.youtub... n1YbpHJvLU
We have posted this problem before but not here...

If you are planning to attend university in the US you should probably know the answer!

Assuming you are one of approximately 30,000 of equally qualified students applying to top 10 US universities with an average acceptance rate of around 7%, what is your chance of being admitted to at least one of these schools?
It's close to 50% so yes just going for top 10 isn't a good option you need some safeties
Tech Leadership Opportunity!
Hi everyone,

I'm Russell and I'm here representing Tech Literacy for Seniors. We are a nonprofit (seeking incorp.) that basically provides tech help for seniors.

We are currently seeking motivated individuals who want to start chapters and serve as Chapter Presidents.

If you are interested, please visit our website russellyan... e.com/tech where you can learn more and sign up to a Chapter President.
Hi everyone. Our new website is engagestem.org. Also, here's some more information about what we do:

Tech Literacy for Seniors is a program designed to help seniors become comfortable and capable with using their devices. We coordinate a network of chapters, led by Chapter Leaders and supported by student volunteers, which provide free tech help to seniors in the surrounding area. Typically, Chapter Leaders organize a group of volunteers and find a location to teach at (like a library). Then, they hold tech help sessions where student volunteers tutor the seniors one-on-one.
A Buddhist monk got an errand from his teacher: to meditate for exactly 45 minutes. He has no watch; instead he is given two inscent sticks, and he is told that each of those sticks would completely burn in 1 hour. The sticks are not identical, and they burn with variant yet unknown rates (they are hand-made). So he has these two inscent and some matches: can he arrange for exactly 45 minutes of meditation?

By V Mitlin
Some really cool math tricks www.easyca... beauty.php - this is my favorite
You are in a dark room with a deck of 50 cards (you can't see the cards). Each card has white and black side. 6 cards are black side up while the rest are white. How do you divide the deck into two piles with equal numbers of black and white cards in each?
Coin problem: You have 12 coins that all look exactly the same. One is different (counterfeit) and is either heavier or lighter than the other 11. With a balance scale, how do you find the counterfeit coin with 3 weightings.
@Aryamaan this only works if you know the coin is heavier...we dont
Yes, but the fake coin could be lighter. I was thinking that you could do 3 against 3. That way you’ve narrowed it down to six. If they weigh the same then those six are good. If not the fake is in the remaining six. Weight two against two. If they are the same the fake is in the remaining two. Weight one against a true. But if they are not the same you take one coin off from each side. If the same both are good if not one is the fake.
Took me a while but I think this is it

First, split the coins into 3 groups of 4

1. weigh 1 2 3 4 and 5 6 7 8

If same then fake is one of the 9 10 11 or 12

2. weigh 1 2 3 (all fair) with 9 10 11, if same 12 is fake; if 9 10 and 11 is heavier or lighter then one of 9 10 or 11 is fake and we know if it's lighter or heavier
3. assuming it was heavier, weigh 9 and 10, if same then 11 is fake and if say one or the other is heavier then whichever it is it is a fake coin

Now, if 1 2 3 4 and 5 6 7 8 don't balance, assume 5 6 7 8 was heavier (same would work if it was lighter)

2. Take 1 5 6 and 2 3 7 to see if they balance, if they do then either 4 or 8 is fake
3. Weigh 4 or 8 against one of the good coins among 9 10 11 12 and you will know which one is fake since we know that 4 is either fair or lighter and 8 could only be fair or heavier

If 1 5 6 and 2 3 7 don't balance and 1 5 6 is now heavier than 2 3 7 then we know that fake coin is either 5 or 6 since 1 is either fair or lighter
3. Weigh either 5 or 6 against one of the good coins and you will know which one is fake

If 1 5 6 is lighter than 2 3 7 then either 1 is lighter or 7 is heavier
3. Weigh 1 or 7 against any fair coin and you will know which one is fake; if 1 is same as say 9 then 7 is fake and if 1 is lighter than 9 then 1 is fake
Math Riddle: Two mothers and two daughters go to a bookstore. There each one of them buy a fiction book for 20$ but they only paid 60$ in total. How could that happen?
(Assuming NO discounts in the bookstore)
Haha two mothers and two daughters are 3 people!
Let's call them A, B and C. C is B's mother and A's grandmother. B is C's daughter and A's mother. A is B's daughter and C's granddaughter. We have 2 mothers and 2 daughters.