Bebras International Challenge on Informatics and Computational Thinking (Bebras)

Bebras International Challenge on Informatics and Computational Thinking

Bebras！Be Brave！

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1 个
Every year, 85 countries and regions
around the world participate.
1 million

students worldwide participate.
Over 4 million
1 year

Founded in 2004
with a history of 21 years
1
6 difficulty levels
From Grade 1 of primary school
to Grade 3 of senior high school
C-E

In the Chinese region
both Chinese and English test papers are provided
1 %

Awards are presented by country
The award - winning rate in the Chinese region exceeds 70%
Thinking

Fall in love with informatics
Anyone with zero programming foundation can participate
Past Papers

Question bank for

pre - exam preparation

What is the Bebras International Computational Thinking Challenge?

Introduction to the Bebras International Computational Thinking Challenge

Founded in 2004 by Prof. Dr. (HP) Valentina Dagienė, a professor at the Institute of Mathematics and Informatics at Vilnius University in Lithuania and former Chair of the International Olympiad in Informatics (IOI), the Bebras Challenge is a global educational initiative dedicated to computational thinking and informatics for young people. Its mission is to spark students' interest in computer science through engaging problems, cultivating their ability to solve problems using computational and logical thinking—without requiring any prior knowledge of programming languages. It serves as a high-quality activity to support AI education in schools.

Scale and Influence

  • Global Participation: Each year, over 4 million students from 85 countries and regions take part. Notable participation figures include approximately 700,000 students in France, 500,000 in Germany, and 400,000 in the UK.
  • University Endorsements: The challenge is officially recognized and recommended by world-leading institutions such as MIT (USA), University of Cambridge (UK), and University of Waterloo (Canada).

Problem Design Philosophy
Bebras' problems are designed to be relatable to everyday life, transforming abstract informatics concepts into concrete scenarios. This approach enables students without programming or robotics experience to leverage mathematical skills like logic, induction, reasoning, and computation to solve problems, making it an ideal gateway to computational thinking for all learners.

Recognition of the Bebras International Computational Thinking Challenge by World-renowned Universities

Officially recommended by the Admissions Office of the Massachusetts Institute of Technology (MIT), USA



Official website：https://mitadmissions.org/apply/prepare/stem/

Officially recommended by the Department of Computer Science and Technology, University of Cambridge, UK


Official website：https://www.cst.cam.ac.uk/admissions/undergraduate/super-curricular-activities

Officially recommended by the Faculty of Computer Science, University of Waterloo, Canada

Official website：https://cs.uwaterloo.ca/outreach

What is Computational Thinking?

What is computational thinking?

Beaver Sister: Hi~ Brother, what is computational thinking?
Beaver Brother: It's a problem-solving mindset.
For example, how would you organize books in a library?
Beaver Sister: I would classify the books, put them into bookcases, and then arrange the bookcases neatly.
Beaver Brother: Great! A very important aspect of computational thinking is decomposition thinking—breaking big problems into smaller ones.
But we also need to solve issues like book indexing, placement, and search.

Decomposition

Break down large problems into smaller ones for solving

Abstract

Extract key points (such as catalog rules, placement characteristics)

Modeling

Design pattern frameworks (layout → structure → design)

Algorithm Design

Execution process (methods → steps → execution)

This entire set of thinking activities is computational thinking! It efficiently solves problems through the process of "decomposition → abstraction → modeling → algorithm design" and can be continuously optimized. It is the core competency for learning information technology.

Computational Thinking:

Computational thinking refers to the thinking activities involving abstraction, decomposition, modeling, and algorithm design in the process of problem-solving, using the methodological approaches of the computer science field.

Students with computational thinking can:

Abstract, decompose, and model problems, and formulate solutions through algorithm design;
Attempt to simulate, simulate, and verify the problem-solving process, reflect on and optimize problem-solving solutions, and transfer them to solve other problems.

——Excerpted from the Information Technology Curriculum Standards (2022)

Beaver Brother: Now that everyone understands what computational thinking is, let's think about the following problem together!



Bebras Past Exam Questions

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Each country sets its own questions

Every member country of Bebras provides an original set of exam questions annually.

Worldwide Expert Discussions

The global organizing committee of Bebras convenes informatics and mathematics experts from all member countries to discuss question development and select the annual question bank.

Each country selects its own real exam questions for the year.

Member countries choose questions from the annual international question bank for their national activities.

Exhibition of Real Exam Questions

Gold Coin Pyramid
Emile has six coins.
He places them one next to another on the table, forming a shape like a pyramid.
So, which coin is the fourth one that Emile places on the table?



A



B



C



D

Click to View Answers

Optimal Route
A truck travels between cities via the highways shown below. Bridges and tunnels impose height restrictions on the truck. Specifically, the number on each highway indicates the maximum height of a truck that can pass through.
If the truck wants to travel from the starting point to the endpoint, what is its maximum allowable height?


A.80

B.90

C.100

D.110

Click to View Answers

Maze
Little Witch Luna discovered a treasure - hiding cave. To find the treasure, she needs to go through a maze.There are five treasures in the treasure - hiding cave: coins, rubies, a magic book, a treasure box, and a magic potion.She doesn't know which one to choose, so she decides to follow these rules:Go downward first (↓);If there's no path downward, go to the right (→);If there's neither a downward nor a rightward path, go to the left (←);Don't turn back or fly upward (↑) until reaching the treasure.

Which treasure will Luna get?


A.1


B.2


C.3


D.4


E.5

Click to View Answers

Beaver and Butterfly

A beaver is taking photos of butterflies. But every time the beaver takes a photo, half of the butterflies fly away.How many photos does the beaver take?
There are 64 butterflies in the first photo, and there are 2 butterflies in the last photo.


A.5

B.7

C.3

D.6

Click to View Answers

Bebras Rules

Suitable Grades: Grades 1 - 12, divided into six difficulty levels

Level Corresponding Grades Number of Questions per Level Test Duration
Level A Grades 1 - 2 (Primary School) 15 questions per level 45 minutes
Level B Grades 3 - 4 (Primary School)
Level C Grades 5 - 6 (Primary School) 18 questions per level 60 minutes
Level D Grades 7 - 8 (Junior High School, Grade 7 and 8)
Level E Grades 9 - 10 (Senior High School, Grade 9 and 10)
Level F Grades 11 - 12 (Senior High School, Grade 11 and 12)

Award Settings

Global Awards

● Honor Roll: Students with the same score will receive this award

China Region Awards

● Super Gold Award Top: Top 5% ranking
● Gold Award: Top 15% ranking
● Silver Award: Top 30% ranking
● Bronze Award: Top 45% ranking
● Proficiency Award: Top 25% in each province/municipality/autonomous region/special administrative region (excluding national awards)
● Each grade is awarded separately

Participation Information

Fee:

(including activity fee, service fee, questionnaire fee, certificate fee, reference answer fee, etc.)
*Pay in Hong Kong dollars. The RMB amount is adjusted according to the exchange rate fluctuations.

Registration and Payment Deadline: November 4, 2025

Registration Methods

● Method 1: Scan the QR code on the official website to register.
● Method 2: Schools organize registration

Academic Training Materials: Provide previous years' real questions for pre - training


Certificate Sample

Global Participation Distribution

In 2025, approximately 4 million students from 85 countries and regions worldwide participated in the Bebras International Challenge on Informatics and Computational Thinking.


Africa
• South Africa
• Algeria
• Namibia
• Senegal
Asia
• China
• Japan
• South Korea
• India
• Singapore
• Malaysia
• Thailand


• Vietnam
• Indonesia
• Philippines
• Iran
• Pakistan
• Saudi Arabia
• Syria
• Turkey
• Uzbekistan
• Afghanistan
• Armenia
• Nigeria
• Palestine


Europe
• United Kingdom
• Germany
• France
• Italy
• Spain
• Portugal
• Netherlands
• Switzerland
• Finland
• Denmark
• Belgium
• Austria
• Portugal


• Hungary
• Slovakia
• Croatia
• Slovenia
• Bosnia and Herzegovina
• Bulgaria
• Cyprus
• Czech Republic
• Estonia
• Iceland
• Ireland
• Latvia
• Lithuania
• Montenegro


• North Macedonia
• Romania
• Ukraine
• Greece
• Kosovo
• Malta
North America
• United States
• Canada
• Mexico
• Dominican Republic
• Jamaica
• Puerto Rico

South America
• Brazil
• Argentina
• Colombia
• Peru
• Uruguay
• Costa Rica
• Cuba
• Paraguay
Oceania
• Australia
• New Zealand

FAQ

Refund policy

If, for some reason, the student is unable to attend after paying the fee, please contact us. If you apply before the registration deadline, 25% of the registration fee will be deducted as academic materials and service fees. If you apply after the registration deadline, no refund will be given.

Northern Contact
Northern Region：
Beijing、Tianjin、Heilongjiang、Jilin、Liaoning、 Heibei、Inner Mongolia、Shanxi、Shandong
Eastern China Contact
Eastern Region：
Shanghai、Zhejiang、Jiangsu
Central China Contact
Central Region：
Henan
Southern China Contact
Southern Region：
Guangdong、Guangxi、Fujian、Hainan、Hongkong、Macao、Taiwan
Western China Contact
Western Region：
Chongqing、Sichuan、Yunnan、Guizhou、Shaanxi、Gansu、Qinghai、Tibet、Ningxia、Xinjiang
Central China Contact
Central Region：
Hunan、Hubei、Anhui、Jiangxi