Math journal for high school students? I recently discovered The College Mathematics Journal and enjoyed reading through some of the articles on fun applications of mathematics. I'd like to send some of the articles to my younger sister, a high school sophomore, but unfortunately most of them require calculus, a subject she hasn't studied yet.
Are there any other journals or websites that publish quality articles on applied math that a high school student taking pre-calculus could understand reasonably well?
 A: Mathematical Mayhem was a math journal intended for and run by high school and university students.  It now runs as a section within the journal Crux Mathematicorum, published by the Canadian Math Society.  It looks like the Math Mayhem section is accessible without a subscription.  However, the focus seems to be on problem-solving, so maybe it isn't what you're looking for, but I thought I'd mention it just in case.  
A: There is one dead journal Quantum
A: The most popular resource among the students at the MathPath summer camp seems to be the web site Art of Problem Solving.  (I also highly recommend summer camps such as MathPath, although that particular one is for ages 11-14.  In my impression, the four most venerated choices at the high school level are MathCamp, Promys, Ross, and Hampshire.  It may be challenging to get into these; the AMS maintains an extended list.)
A: There is a Hungarian mathematics (and physics) journal for high-school students (KöMaL); I think it's mostly in Hungarian, but there are some English articles on their homepage, and there are some special issues in English. They also have running competitions, which are definitely available in English (for the last 40 years or so!). There is an archive of old issues, which seems to contain English material as well, but unfortunately it is not working at the moment...
A: Plus Magazine by the University of Cambridge is another great resource.
A: The Girls' Angle Bulletin is another great resource with lots of interesting articles about math aimed at a pre-college level. It's especially nice because the style of writing is informal and the articles span a wide variety of mathematical topics. All the past issues are available for free online: 
http://www.girlsangle.org/page/bulletin.php
A: Mathematical Digest published by the university of Cape Town.
http://www.math.uct.ac.za/mam/outreach/digest/archive
A: Admittedly German language, but die Wurzel, published at the University of Jena, holds a pretty high quality. If you can read German, (or want to learn) I can recommend it warmly.
Similar journals exist in Hungary, Poland and Russia.
A: If you are interested I have recently created a journal of mathematics exclusively for high school students. It is called the High School Journal of Mathematics and you can view the website here (https://hsmathjournal.wordpress.com/), and we publish articles and research on any mathematical topic. 
Thanks. 
A: In French : Tangente and for very good high school pupils and undergraduates : Quadrature.
A: An excellent journal published by the University of New South Wales (my alma mater!) is Parabola, aimed at interested secondary students.
A: Many journals have expository and survey articles that can be read by high school students.
Some of these are listed here:
http://www.york.cuny.edu/~malk/biblio/journals-biblio.html
Best.
Joe Malkevitch
A: I have recently started a mathematics section of Frontiers for Young Minds [http://kids.frontiersin.org], a journal in which kids (ages 8-15) are not only the target audience but also the referees.  The section is very new and we do not yet have any articles, but I hope that will change before long!
