We've heard many requests to make it even easier to create rich content. It's always been our goal to create a system which empowers everyone with a vision of an interactive lesson to turn it into reality - without needing to know how to program. :)
Our first version, eML, helped to reduce the barrier significantly, but today, we've released an even easier-to-use lesson editor! It's still under intense development, and so you'll see it grow through leaps and bounds over the next few days. Give it a spin, and share your feedback! We'd be happy to improve it to the liking of our community. :)
Attention all females of the expii community! Po-Shen Loh and I started a Facebook page for all the girls on expii so that we can boost the number of girls on this site (and hopefully in the world of mathematics in general) and inspire other young girls to be interested in math as well! If you're interested in joining, please find us on Facebook and we'll add you to the page!
Hi Michael! When is the next astronomy edit-a-thon? :)
I'm new to expii, and I've only just started to explore all the content here. I noticed that there isn't yet a topic on constructible numbers; will that be coming in the future? I think I have some writing that could contribute to that topic.
OK, I've posted an explanation here:
Feedback is welcome!
Hi! Since @Po-Shen-Loh is currently on a plane to Munich en route to the Romanian Masters in Mathematics (wish team USA luck!), I'll be running this Jam today. Here's just some links to the pages about Waves that people can post in.
Since all these links have at most 1 post and no exercises, any contribution is very very helpful! Feel free to ask any questions, discuss any ideas, write/edit articles, etc. I'll be writing about interference in the meantime.
Does anyone have the solutions for the USA TSTST 2015, especially problems 3 and 6, since there are no correct solutions posted on AoPS as of now?
How do I...
@Po-Shen-Loh Can I get https://www.expii.com/t/existence-of-the-dodecahedron-1193?type=explanation&id=5144 deleted too, please? I accidentally typed this when I meant to type it in another tab, and saved it.
We pull profile images from gravatar. So if you add an image to the email you use for Expii, we'll pull it down.
Re: 19.4, I am fairly sure that the answer is not 271 or 272. I got the answer it accepts and it's definitely correct, and I checked with wolfram|alpha.
The rest I agree at least somewhat with. I have my own bug report:
5.3: "The Stock Market": Okay, this is an okay problem with only minor potential ambiguities. I solved it, so I thought, but it said I was wrong. So I checked my work several times over and still got the same answer. Maybe I was interpreting the question wrong, I thought, so I tried some similar answers out but none of them worked. It says "round to the nearest whole percent", so I tried 0.xy, .xy, xy%, and also tried adding more digits, but nothing worked. Finally I just wanted to know what answer it accepted so I tried every single whole percentage from 0% to 100%; it accepted none of them. I did this again just to make sure I hadn't missed anything. Now I am still fairly confident that I had the correct answer to begin with, and it looks like the problem just doesn't accept it. I'd be happy to write a solution for it too, if I ever get the green box! What's so puzzling is that apparently 214 people have solved this question which does not appear to have an answer.
This is the last #3 question that I have not solved, and so would like to just be done with it at this point.
The books are fine if you get the PDF version of it and print it yourself.
Check these out! So many hidden gems in this world (the internet in particular). :) We'll definitely be consulting this for the upcoming Algebra map (which might include number theory and some counting as well)!