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Middle School Math Grades 5-8, Ages 10-13, MATHCOUNTS, AMC 8

Grades 5-8, Ages 10-13, MATHCOUNTS, AMC 8

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Middle School Math Grades 5-8, Ages 10-13, MATHCOUNTS, AMC 8

Grades 5-8, Ages 10-13, MATHCOUNTS, AMC 8

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

May is an exciting month! National MATHCOUNTS is the second week of May in Washington D.C. and our Founder, Richard Rusczyk will be presenting a seminar, Preparing Strong Math Students for College and Careers, on May 11th.

Are you interested in working towards MATHCOUNTS and don’t know where to start? We have you covered! If you have taken Prealgebra, then you are ready for MATHCOUNTS/AMC 8 Basics. Already aiming for State or National MATHCOUNTS and harder AMC 8 problems? Then our MATHCOUNTS/AMC 8 Advanced course is for you.

Summer camps are starting next month at the Virtual Campus in math and language arts that are 2 - to 4 - weeks in duration. Spaces are still available - don’t miss your chance to have an enriching summer experience. There are middle and high school competition math camps as well as Math Beasts camps that review key topics coupled with fun explorations covering areas such as graph theory (Math Beasts Camp 6), cryptography (Math Beasts Camp 7-8), and topology (Math Beasts Camp 8-9)!

Be sure to mark your calendars for the following upcoming events:
[list][*]May 9th, 4:30pm PT/7:30pm ET, Casework 2: Overwhelming Evidence — A Text Adventure, a game where participants will work together to navigate the map, solve puzzles, and win! All are welcome.
[*]May 19th, 4:30pm PT/7:30pm ET, What's Next After Beast Academy?, designed for students finishing Beast Academy and ready for Prealgebra 1.
[*]May 20th, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 1 Math Jam, Problems 1 to 4, join the Canada/USA Mathcamp staff for this exciting Math Jam, where they discuss solutions to Problems 1 to 4 of the 2025 Mathcamp Qualifying Quiz!
[*]May 21st, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 2 Math Jam, Problems 5 and 6, Canada/USA Mathcamp staff will discuss solutions to Problems 5 and 6 of the 2025 Mathcamp Qualifying Quiz![/list]
Our full course list for upcoming classes is below:
All classes run 7:30pm-8:45pm ET/4:30pm - 5:45pm PT unless otherwise noted.

Introductory: Grades 5-10

Prealgebra 1 Self-Paced

Prealgebra 1
Tuesday, May 13 - Aug 26
Thursday, May 29 - Sep 11
Sunday, Jun 15 - Oct 12
Monday, Jun 30 - Oct 20
Wednesday, Jul 16 - Oct 29

Prealgebra 2 Self-Paced

Prealgebra 2
Wednesday, May 7 - Aug 20
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Sunday, Jun 29 - Oct 26
Friday, Jul 25 - Nov 21

Introduction to Algebra A Self-Paced

Introduction to Algebra A
Sunday, May 11 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Wednesday, May 14 - Aug 27
Friday, May 30 - Sep 26
Monday, Jun 2 - Sep 22
Sunday, Jun 15 - Oct 12
Thursday, Jun 26 - Oct 9
Tuesday, Jul 15 - Oct 28

Introduction to Counting & Probability Self-Paced

Introduction to Counting & Probability
Thursday, May 15 - Jul 31
Sunday, Jun 1 - Aug 24
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Wednesday, Jul 9 - Sep 24
Sunday, Jul 27 - Oct 19

Introduction to Number Theory
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Wednesday, May 21 - Aug 6
Monday, Jun 9 - Aug 25
Sunday, Jun 15 - Sep 14
Tuesday, Jul 15 - Sep 30

Introduction to Algebra B Self-Paced

Introduction to Algebra B
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Intermediate: Grades 8-12

Intermediate Algebra
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Intermediate Counting & Probability
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Precalculus
Friday, May 16 - Oct 24
Sunday, Jun 1 - Nov 9
Monday, Jun 30 - Dec 8

Advanced: Grades 9-12

Olympiad Geometry
Tuesday, Jun 10 - Aug 26

Calculus
Tuesday, May 27 - Nov 11
Wednesday, Jun 25 - Dec 17

Group Theory
Thursday, Jun 12 - Sep 11

Contest Preparation: Grades 6-12

MATHCOUNTS/AMC 8 Basics
Friday, May 23 - Aug 15
Monday, Jun 2 - Aug 18
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

MATHCOUNTS/AMC 8 Advanced
Sunday, May 11 - Aug 10
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Wednesday, Jun 11 - Aug 27
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Problem Series
Friday, May 9 - Aug 1
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Sunday, Jun 22 - Sep 21 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
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Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Final Fives
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AMC 12 Problem Series
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AIME Problem Series A
Thursday, May 22 - Jul 31

AIME Problem Series B
Sunday, Jun 22 - Sep 21

F=ma Problem Series
Wednesday, Jun 11 - Aug 27

WOOT Programs
Visit the pages linked for full schedule details for each of these programs!

MathWOOT Level 1
MathWOOT Level 2
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PhysicsWOOT

Programming

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USACO Bronze Problem Series
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Physics

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Monday, Jun 23 - Sep 15

Physics 1: Mechanics
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Monday, Jun 23 - Dec 15

Relativity
Mon, Tue, Wed & Thurs, Jun 23 - Jun 26 (meets every day of the week!)

0 replies

jlacosta

May 1, 2025

0 replies

annoying exponent simplification. pls help

Miranda2829 4

(3xy-3x-6)² ( 2x²-3y²-3)²
--------------------------------------
(3xy-3x-6)⁵ (-x³-6xy+4x) ⁵

It is upper one divide lower part.. sorry, i can't get the right form
tips ..... Thanks

4 replies

Miranda2829

Yesterday at 9:56 PM

Miranda2829

an hour ago

9 How many squares do you have memorized

LXC007 38

How many squares have you memorized. I have 1-20

38 replies

LXC007

Saturday at 3:44 PM

whwlqkd

3 hours ago

Find digits

MihaiT 16

Find digits $a,b,c$ s.t. $\frac{a}{a+b+c}=\overline{0,abc }$

16 replies

MihaiT

Yesterday at 4:56 PM

MihaiT

3 hours ago

Australia Law Writers

lawwriters 0

Law school is intense, but Law Assignment Help gave me clarity and confidence. Their expert- written solutions really improved my academic performance.

Assignment Help Perth
Assignment Help Adelaide
Assignment Help Brisbane
Assignment Help Sydney
Assignment Help Melbourne

0 replies

lawwriters

3 hours ago

0 replies

High School Math Grades 9-12, Ages 13-18

Grades 9-12, Ages 13-18

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High School Math Grades 9-12, Ages 13-18

Grades 9-12, Ages 13-18

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120,664 topics

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

0 replies

jlacosta

May 1, 2025

0 replies

System of Equations

P162008 0

If $a,b$ and $c$ are complex numbers such that

$(a + b)(b + c) = 1$

$(a - b)^2 + (a^2 - b^2)^2 = 85$

$(b - c)^2 + (b^2 - c^2)^2 = 75$

Compute $(a - c)^2 + (a^2 - c^2)^2.$

0 replies

P162008

10 minutes ago

0 replies

System of Equations

P162008 0

If $a,b$ and $c$ are real numbers such that

$\prod_{cyc} (a + b) = abc$

$\prod_{cyc} (a^3 + b^3) = (abc)^3$

Compute the value of $abc.$

0 replies

P162008

16 minutes ago

0 replies

Vieta's Relation

P162008 0

If $\alpha, \beta$ and $\gamma$ are the roots of the cubic equation $x^3 - x^2 - 2x + 1 = 0$ then compute $\sum_{cyc} (\alpha + \beta)^{1/3}.$

0 replies

P162008

20 minutes ago

0 replies

System of Equations

P162008 0

If $a,b$ and $c$ are complex numbers such that

$\frac{ab}{b + c} + \frac{bc}{c + a} + \frac{ca}{a + b} = -9$

$\frac{ab}{c + a} + \frac{bc}{a + b} + \frac{ca}{b + c} = 10$

Compute $\frac{a}{c + a} + \frac{b}{a + b} + \frac{c}{b + c}.$

0 replies

P162008

24 minutes ago

0 replies

Contests & Programs AMC and other contests, summer programs, etc.

AMC and other contests, summer programs, etc.

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Contests & Programs AMC and other contests, summer programs, etc.

AMC and other contests, summer programs, etc.

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

0 replies

jlacosta

May 1, 2025

0 replies

Jane street swag package? USA(J)MO

arfekete 41

Hey! People are starting to get their swag packages from Jane Street for qualifying for USA(J)MO, and after some initial discussion on what we got, people are getting different things. Out of curiosity, I was wondering how they decide who gets what.
Please enter the following info:

- USAMO or USAJMO
- Grade
- Score
- Award/Medal/HM
- MOP (yes or no, if yes then color)
- List of items you got in your package

I will reply with my info as an example.

41 replies

arfekete

May 7, 2025

Alien_PI

3 hours ago

[TEST RELEASED] OMMC Year 5

DottedCaculator 81

Test portal: https://ommc-test-portal-2025.vercel.app/

Hello to all creative problem solvers,

Do you want to work on a fun, untimed team math competition with amazing questions by MOPpers and IMO & EGMO medalists? $\phantom{You lost the game.}$
Do you want to have a chance to win thousands in cash and raffle prizes (no matter your skill level)?

Check out the fifth annual iteration of the

Online Monmouth Math Competition!

Online Monmouth Math Competition, or OMMC, is a 501c3 accredited nonprofit organization managed by adults, college students, and high schoolers which aims to give talented high school and middle school students an exciting way to develop their skills in mathematics.

Our website: https://www.ommcofficial.org/
Our Discord (6000+ members): https://tinyurl.com/joinommc

This is not a local competition; any student 18 or younger anywhere in the world can attend. We have changed some elements of our contest format, so read carefully and thoroughly. Join our Discord or monitor this thread for updates and test releases.

How hard is it?

We plan to raffle out a TON of prizes over all competitors regardless of performance. So just submit: a few minutes of your time will give you a great chance to win amazing prizes!

How are the problems?

You can check out our past problems and sample problems here:
https://www.ommcofficial.org/sample
https://www.ommcofficial.org/2022-documents
https://www.ommcofficial.org/2023-documents
https://www.ommcofficial.org/ommc-amc

How will the test be held?/How do I sign up?

Solo teams?

Test Policy

Timeline:
Main Round: May 17th - May 24th
Test Portal Released. The Main Round of the contest is held. The Main Round consists of 25 questions that each have a numerical answer. Teams will have the entire time interval to work on the questions. They can submit any time during the interval. Teams are free to edit their submissions before the period ends, even after they submit.

Final Round: May 26th - May 28th
The top placing teams will qualify for this invitational round (5-10 questions). The final round consists of 5-10 proof questions. Teams again will have the entire time interval to work on these questions and can submit their proofs any time during this interval. Teams are free to edit their submissions before the period ends, even after they submit.

Conclusion of Competition: Early June
Solutions will be released, winners announced, and prizes sent out to winners.

Scoring:

Prizes:

I have more questions. Whom do I ask?

We hope for your participation, and good luck!

OMMC staff

OMMC’S 2025 EVENTS ARE SPONSORED BY:

[list]
[*]Nontrivial Fellowship
[*]Citadel
[*]SPARC
[*]Jane Street
[*]And counting!
[/list]

81 replies

DottedCaculator

Apr 26, 2025

fuzimiao2013

4 hours ago

EGMO help

mathprodigy2011 25

If we have a quadrilateral with 1 pair of parallel sides but the parallel sides are also equal, is that sufficient to stating the quadrilateral is a parallelogram. if it's not, please give a counter-example.

25 replies

mathprodigy2011

Yesterday at 10:30 PM

Schintalpati

4 hours ago

MathILy 2025 Decisions Thread

mysterynotfound 42

Discuss your decisions here!
also share any relevant details about your decisions if you want

42 replies

mysterynotfound

Apr 21, 2025

quavante

5 hours ago

High School Olympiads Regional, national, and international math olympiads

Regional, national, and international math olympiads

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High School Olympiads Regional, national, and international math olympiads

Regional, national, and international math olympiads

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312,963 topics

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

0 replies

jlacosta

May 1, 2025

0 replies

Geometry

MathsII-enjoy 1

Given triangle $ABC$ inscribed in $(O)$ with $M$ being the midpoint of $BC$ . The tangents at $B, C$ of $(O)$ intersect at $D$ . Let $N$ be the projection of $O$ onto $AD$ . On the perpendicular bisector of $BC$ , take a point $K$ that is not on $(O)$ and different from M. Circle $(KBC)$ intersects $AK$ at $F$ . Lines $NF$ and $AM$ intersect at $E$ . Prove that $AEF$ is an isosceles triangle.

1 reply

MathsII-enjoy

May 15, 2025

MathsII-enjoy

a minute ago

Probably a good lemma

Zavyk09 5

Source: found when solving exercises

Let $ABC$ be a triangle with circumcircle $\omega$ . Arbitrary points $E, F$ on $AC, AB$ respectively. Circumcircle $\Omega$ of triangle $AEF$ intersects $\omega$ at $P \ne A$ . $BE$ intersects $CF$ at $I$ . $PI$ cuts $\Omega$ and $\omega$ at $K, L$ respectively. Construct parallelogram $KFRE$ . Prove that $A, R, L$ are collinear.

5 replies

Zavyk09

Yesterday at 12:50 PM

Orzify

9 minutes ago

D1033 : A problem of probability for dominoes 3*1

Dattier 1

Source: les dattes à Dattier

Let $G$ a grid of 9*9, we choose a little square in $G$ of this grid three times, we can choose three times the same.

What the probability of cover with 3*1 dominoes this grid removed by theses little squares (one, two or three) ?

1 reply

Dattier

May 15, 2025

Dattier

34 minutes ago

Two perpendiculars

jayme 2

Source: Own?

Dear Mathlinkers,

1. ABC a triangle
2. 0 the circumcircle
3. D the pole of BC wrt 0
4. B', C' the symmetrics of B, C wrt AC, AB
5. 1b, 1c the circumcircles of the triangles BB'D, CC'D
6. J the center of 1b
7. V the second point of intersection of DJ and 1c.

Prove : CV is perpendicular to BC.

Sincerely
Jean-Louis

2 replies

jayme

5 hours ago

jayme

37 minutes ago

College Math Topics in undergraduate and graduate studies

Topics in undergraduate and graduate studies

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College Math Topics in undergraduate and graduate studies

Topics in undergraduate and graduate studies

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114,296 topics

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

0 replies

jlacosta

May 1, 2025

0 replies

Calculus

youochange 4

Find the area enclosed by the curves $e^x,e^{-x},x^2+y^2=1$

4 replies

youochange

May 10, 2025

Mathzeus1024

an hour ago

Convergence of complex sequence

Rohit-2006 2

Suppose $z_1, z_2,\cdots,z_k$ are complex numbers with absolute value $1$ . For $n=1,2,\cdots$ define $w_n=z_1^n+z_2^n+\cdots+z_k^n$ . Given that the sequence $(w_n)_{n\geq1}$ converges. Show that,
$z_1=z_2=\cdots=z_k=1$ .

2 replies

Rohit-2006

Saturday at 7:56 PM

c00lb0y

3 hours ago

D1035 : Super TVI 2

Dattier 1

Source: les dattes à Dattier

Let $f \in C([0,1])$ . Is it true that $\exists a \in \left[0;\dfrac 13\right] \cup \left[\dfrac 23; 1 \right] , |f(a)| \leq 4 |f(1-a)|$ ?

1 reply

Dattier

Yesterday at 10:54 PM

alexheinis

3 hours ago

D1034 : Super TVI

Dattier 2

Source: les dattes à Dattier

Let $f \in C([0,1])$ . Is it true that $\exists a \in \left[0;\dfrac 12\right], |f(a)| \leq 8 |f(1-a)|$ ?

2 replies

Dattier

Yesterday at 10:21 PM

alexheinis

3 hours ago

Site Support Tech support and questions about AoPS classes and materials

Tech support and questions about AoPS classes and materials

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Site Support Tech support and questions about AoPS classes and materials

Tech support and questions about AoPS classes and materials

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18,668 topics

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k a May Highlights and 2025 AoPS Online Class Information

jlacosta 0

0 replies

jlacosta

May 1, 2025

0 replies

New user not allowed to use LaTeX

Cats_on_a_computer 8

Do I seriously have to post everyday for 14 days for me not to be considered a “new user? I didn’t even upload any images, I just used LaTeX. How am I supposed to write anything without LaTeX?

8 replies

Cats_on_a_computer

Yesterday at 11:43 AM

Cats_on_a_computer

5 hours ago

Time travel

centslordm 19

IMAGE

19 replies

centslordm

Yesterday at 10:59 PM

Yihangzh

Today at 4:07 AM

Duplicate Gamebot

cz1917 3

The same problem of Alcumus is posted twice by Gamebot. They even have different links:
First Link
Second Link

3 replies

cz1917

Today at 1:36 AM

aiops

Today at 3:28 AM

Introducing myself at AoPS, and what's your magic wand?

asuth_asuth 1196

Hi!

I'm Andrew Sutherland. I'm the new Chief Product Officer at AoPS. As you may have read, Richard is retiring and Ben Kornell and I are working together to lead the company now. I'm leading all the software and digital stuff at AoPS. I just wanted to say hello and introduce myself! I'm really excited to be part of the special community that is AoPS.

Previously, I founded Quizlet as a 15-year-old high school student. I did Course 6 at MIT and then left to lead Quizlet full-time for a total of 14 years. I took a few years off and now I'm doing AoPS! I wrote more about all that on my blog: https://asuth.com/im-joining-aops

I have a question for all of you. If you could wave a magic wand, and change anything about AoPS, what would it be? All suggestions welcome! Thank you.

1196 replies