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from Domas

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The students of D2 Class of 25th Primary of Thessaloniki, have created their greeting cards in libre office writer and used Atbash Cipher for their wishes.

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The students of D1 Class of 25th Primary of Thessaloniki, have created their greeting cards in libre office writer and used Atbash Cipher for their wishes.

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My students wrote the Christmas messages using the Caesar Cipher.

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from Paula

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Some secret codes

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Check out this Presentation designed by Teacher Jovita.

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1. Introduction to simple ciphers.

2. Designing a Christmas card in Canva, Scratch, etc.

3. Encoding a greeting message inside the card.

4. Sharing cards with partner schools via Padlet or eTwinning.

5. Decoding each other’s greetings and reflecting on the experience.

We warmly invite schools from different countries to join us in this joyful challenge. By participating, you will not only celebrate Christmas together but also discover the fun side of coding and digital creativity.

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Digital Christmas Cards with Secret Messages

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Digital Christmas Cards with Secret Messages

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As part of Code Week 2025, our students will take part in a creative and playful activity that combines art, coding, and intercultural exchange. The project invites pupils to design digital Christmas cards using tools such as Canva, MS Word or Paint, Google Drawings or Scratch. Each card will contain a hidden greeting, encoded with a chosen cipher – for example Caesar Shift Cipher, Atbash Cipher, Half Reversed Alphabet, color patterns, or symbol substitution.

Through this activity, students will:

Express creativity by designing festive cards with digital tools.

Learn coding basics by exploring how information can be represented and encrypted.

Develop problem‑solving skills while creating and decoding secret messages.

Connect internationally by sharing cards with partner schools and decoding greetings from abroad.