Plan ahead for the next school year. Schedule your class today!

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k a July Highlights and 2025 AoPS Online Class Information
jwelsh   0
Jul 1, 2025
We are halfway through summer, so be sure to carve out some time to keep your skills sharp and explore challenging topics at AoPS Online and our AoPS Academies (including the Virtual Campus)!

[list][*]Over 60 summer classes are starting at the Virtual Campus on July 7th - check out the math and language arts options for middle through high school levels.
[*]At AoPS Online, we have accelerated sections where you can complete a course in half the time by meeting twice/week instead of once/week, starting on July 8th:
[list][*]MATHCOUNTS/AMC 8 Basics
[*]MATHCOUNTS/AMC 8 Advanced
[*]AMC Problem Series[/list]
[*]Plus, AoPS Online has a special seminar July 14 - 17 that is outside the standard fare: Paradoxes and Infinity
[*]We are expanding our in-person AoPS Academy locations - are you looking for a strong community of problem solvers, exemplary instruction, and math and language arts options? Look to see if we have a location near you and enroll in summer camps or academic year classes today! New locations include campuses in California, Georgia, New York, Illinois, and Oregon and more coming soon![/list]

MOP (Math Olympiad Summer Program) just ended and the IMO (International Mathematical Olympiad) is right around the corner! This year’s IMO will be held in Australia, July 10th - 20th. Congratulations to all the MOP students for reaching this incredible level and best of luck to all selected to represent their countries at this year’s IMO! Did you know that, in the last 10 years, 59 USA International Math Olympiad team members have medaled and have taken over 360 AoPS Online courses. Take advantage of our Worldwide Online Olympiad Training (WOOT) courses
and train with the best! Please note that early bird pricing ends August 19th!
Are you tired of the heat and thinking about Fall? You can plan your Fall schedule now with classes at either AoPS Online, AoPS Academy Virtual Campus, or one of our AoPS Academies around the US.

Our full course list for upcoming classes is below:
All classes start 7:30pm ET/4:30pm PT unless otherwise noted.

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0 replies
jwelsh
Jul 1, 2025
0 replies
Website to learn math
hawa   177
N 6 minutes ago by miles888
Hi, I'm kinda curious what website do yall use to learn math, like i dont find any website thats fun to learn math
177 replies
hawa
Apr 9, 2025
miles888
6 minutes ago
9 Was this year's AMC 8 hard or easy
ChuMath   71
N 42 minutes ago by Leeoz
Question: Was this year's AMC 8 harder or easier than last year's (or the historical average)

71 replies
1 viewing
ChuMath
Jan 25, 2024
Leeoz
42 minutes ago
Troll Problem
giratina3   14
N an hour ago by SunnieBunnie
If $\frac{a}{a - 1} = \frac{b^2 + 2b - 1}{b^2 + 2b - 2}$, then what does $a$ equal in terms of $b$?

Hint 1
Hint 2
Hint 3
14 replies
giratina3
Jul 11, 2025
SunnieBunnie
an hour ago
9 Am I going insane?
PenguFish   32
N an hour ago by SunnieBunnie
I feel stupid honestly, and fyi, I did go over every question. Focus is counting with symmetry
32 replies
PenguFish
Mar 26, 2025
SunnieBunnie
an hour ago
No more topics!
Bogus Proof Marathon
pifinity   7747
N Yesterday at 7:47 PM by bird987
Hi!
I'd like to introduce the Bogus Proof Marathon.

In this marathon, simply post a bogus proof that is middle-school level and the next person will find the error. You don't have to post the real solution :P

Use classic Marathon format:
[hide=P#]a1b2c3[/hide]
[hide=S#]a1b2c3[/hide]


Example posts:

P(x)
-----
S(x)
P(x+1)
-----
Let's go!! Just don't make it too hard!
7747 replies
pifinity
Mar 12, 2018
bird987
Yesterday at 7:47 PM
Bogus Proof Marathon
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G H BBookmark kLocked kLocked NReply
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TFEA
47 posts
#8317 • 1 Y
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whats q2016
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Amargolese
20 posts
#8318 • 1 Y
Y by PikaPika999
not posted yet
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vmene
316 posts
#8319 • 1 Y
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Q2016
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jocaleby1
228 posts
#8320 • 1 Y
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S2016
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Studying_geometry
14 posts
#8321 • 1 Y
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Q2017
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SomeonecoolLovesMaths
3448 posts
#8322 • 1 Y
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S2017
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Shan3t
539 posts
#8323 • 1 Y
Y by PikaPika999
S2017

LOLLL @bove sniped me and we wrote the exact same solution :skull:
This post has been edited 1 time. Last edited by Shan3t, Tuesday at 2:25 PM
Reason: sniped :(
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bird987
8 posts
#8324
Y by
Q2018Click to reveal hidden text
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bird987
8 posts
#8325
Y by
sry I couldn't hide it
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vg93157
136 posts
#8326
Y by
S2018
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bird987
8 posts
#8327
Y by
why does that prove me wrong
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vg93157
136 posts
#8328
Y by
Because you said "All triangles are isoceles"
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bird987
8 posts
#8329
Y by
yeah so my proof demonstrates that if you have any triangle with side lengths AB, BC, and AC then the AB is congruent to BC
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vg93157
136 posts
#8330
Y by
How are side lengths 3, 4, and 5 congruent
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bird987
8 posts
#8331
Y by
the idea is that the proof shows that they are
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