The International Day of Mathematics (IDM) is a worldwide celebration. Each year on March 14 all countries will be invited to participate through activities for both students and the general public in schools, museums, libraries and other spaces.


Recent news

Are you planning an event for the 2024 IDM? Let us know and we'll feature it in our map (coming soon).
The UN General Assembly proclaimed 2024‑2033 as the International Decade of Sciences for Sustainable Development. Every year we will offer activities related to this topic.
We updated the IDM logos for Catalan, Greek, Macedonian, Mongolian, Russian and Ukrainian. New logos in Bulgarian and Kurdish!
The 2023 IDM is again part of the activities of the International Year of Basic Sciences for Sustainable Development (IYBSSD 2022-2023).
UNESCO proclaimed March 14 as the International Day of Mathematics on the 40th session of the General Conference on November 26, 2019.

March 14 is already celebrated in many countries as Pi Day because that date is written as 3/14 in some countries and the mathematical constant Pi is approximately 3.14.

The International Day of Mathematics is a project led by the International Mathematical Union with the support of numerous international and regional organizations.

Take a look back at the celebrations, themes and worldwide challenges of the
2020, 2021, and 2022 editions of the International Day of Mathematics.

Join the 2024 celebration

The best way to celebrate the IDM is to host your own event.

Organize an event

Discover ideas and activities to celebrate with your community or in the classroom.

Prepare your venue

Get posters, pin designs, logos and many ideas to decorate your event space.

Publish it in our map

We'll help people in your town find out about your event.
Available a few months before IDM

During 2024 people and organizations all over the world hosted events in their cities:

Keep in touch and receive updates and news about the International Day of Mathematics via email

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Share news about your IDM activities using the hashtag #idm314.

The theme for 2024: Playing with Math

Every year we announce a theme to flavor the celebration, spark creativity and bring light to connections between mathematics and all sorts of fields, concepts and ideas.

In 2024 we want to celebrate mathematical games, puzzles and other entertaining activities, but also "playing" with mathematics itself, exploring, experimenting, and discovering.

Play with the theme!

In some languages the verb play means other things, like "performing" and instrument, or "acting" in a theater.

What other ideas does the theme bring to people's minds in your language? You should consider them when planning activities for your celebration.

These are the official translations of the theme to different languages:

English (US) Playing with Math
English (UK) Playing with Maths
Arabic إلعب بواسطة الرياضيات
Chinese Simplified 游于数
Chinese Traditional 遊於數
French Jouons avec les maths
German Spiele mit Mathematik
Korean 수학과 놀자
Portuguese Brincando com a matemática
Spanish Jugando con las matemáticas
Turkish Oyunla Matematik

Creative worldwide challenges

Each year we invite you to participate in a creative challenge along with your class, family, friends, colleagues or community.

In 2020, you made short videos showing the many ways that Mathematics is Everywhere.

See the 2020 video

In 2021, you used mathematics to create posters sharing ways to make the world better.

Visit the 2021 poster gallery

In 2022, you teamed up, or explored your town, to take pictures with mathematics.

Explore the 2022 photo galleries

In 2023 , you surprised us with your creativity and artistry creating unique comics with mathematics.

Explore the comic gallery