# Challenges from the community

If you take a look a the topic pages, you will notice that we've greatly streamlined the experience. Now, when you select "Take quiz", you will see the various concept quizzes that help you build an understanding of the chapter, and also a collection of the best challenges from the community. I encourage you to give these quizzes a try, especially if you are interested in learning more about the chapter.

For problem creators, we would appreciate your help in creating problems with missing challenge quizzes. In particular, the following chapters could use more Level 1 and 2 problems:

Basic Mathematics: Percentages
Algebra: Quadratic Discriminant, Polynomial Inequalities, Logarithmic Inequalities, Function Graphs, Rational Functions, Floor and ceiling functions
Geometry: Volume, Surface Area, Properties of Triangles, Similar Polygons, General Polygons, 3D Coordinate Geometry
Number Theory: Integer Sequences
Calculus: Polar Equations Calculus
Combinatorics: Data presentation, Distribution into Bins, Rectangular Grid Walk, Expected Value, Introduction to Recursion
Logic: Grid Puzzles, Arithmetic Puzzles
Computer Science: Objects, Complexity / Runtime Analysis, Sorting
Mechanics: Circular motion, Conservation of energy, Angular momentum, Rotational kinetic energy
E&M: Electric fields, Magnetic fields, Magnetic flux

Once we have numerous good problems in the chapter, we will curate a great challenge quiz which will be used to introduce other members to the chapter. Thus, your problems will have a high chance of being featured :)

Note by Calvin Lin
5 years, 9 months ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

• Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
• Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
• Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.

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2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
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\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$

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The topic pages are looking great!

I have shared 15 problems on Circular motion in this set: Circular Motion Practice. Most of the problems in the set are simple, but some are not!

- 5 years, 9 months ago

Oh, that's a nice set :) I've added them to the list. Thanks!

Staff - 5 years, 9 months ago

Thanks! :)

I saw that all the problems have been added to the Uniform Circular Motion skill. However, not all problems have uniform circular motion. In some of the problems, the motion is non-uniform. We could add a skill for Non-uniform circular motion, in the chapter Circular Motion.

- 5 years, 9 months ago

Great!

- 5 years, 9 months ago

Thanks ! :)

- 5 years, 9 months ago

I did a few quizzes last night and I enjoy the new layout. The only area for improvement, in my opinion, is that upon completion there is no indicatior of what has been completed already when at the home list of quizzes. Since starting on Brilliant back in April, the site has undergone many great changes and I look forward to seeing how it develops even further. Thanks for all you folks do.

- 5 years, 8 months ago

Thanks for that suggestion!

We are actively decoupling the quizzes from the list of wikis. We hope to present a list of distinct wikis related to the chapter, and then provide relevant quizzes for you to work on when exploring deeper. We will think about how to indicate quiz progress in a simple way.

Staff - 5 years, 8 months ago

This sounds certainly exciting! I will contribute to the logic section!

- 5 years, 9 months ago

Woohoo!

Staff - 5 years, 8 months ago

I can surely contribute to the Algebra and Geometry section :)

- 5 years, 9 months ago

Looking forward to that!

Staff - 5 years, 9 months ago

Thank you, it will be a great help

- 5 years, 8 months ago

Request@Calvin Lin : I have posted various problems but they are not rated . Please help me out . Some problems of mine are waiting to be rated for more than month

- 5 years, 8 months ago

This comment is irrelevant to the discussion, and I will delete this thread soon. You can leave such comments on my message board instead.

As I've told you, problems are rated by

1. The problem creator or moderator gives it an initial seed level. We state that it is "Level pending (100 points)".
2. The community works on the problem.
3. After enough people have worked on it and we have become more confident that the rating is accurate, we will release the level of the problem.

So, to ensure that your problems get rated, you can
1. Give it an initial seed level.
2. Make the problem good and interesting.

If you realize that a problem doesn't have an initial seed level, IE it says "level pending(10 points)", AND that it is a really interesting problem that the community loves (say > 100 views), you can mention me and I will assign a level accordingly.

If all of your problems say "level pending (100 points)", then it is a likely indication that they need to be improved on, in order to appeal to the community. Problem writing is a skill, which can be developed over time.

Staff - 5 years, 8 months ago