8 Save the Presents! – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-08-en/
Zyanya Santuario, MATH+ Autor: Lukas Protz (MATH+) Challenge When the security elf
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5 Sporty Lunch Break – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-05-en/
Today, the head elf Alvie is responsible for organizing the break.
6 Workbench Hubbub – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2024-06-en/
The elves proceed as follows: Each elf wraps their present at the same time as
2 Ready, SET, Bake! – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-02-en/
Friederike Hofmann, MATH+ Author: Lukas Protz (MATH+) Challenge Annika is a diligent elf
24 Spiral Poem Competition – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-24-en/
Claus calls them with a loud bell And all eyes turn to Pip, the shy elf Santa says
1 Game of Chests – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-01-en/
Claus has issued a new decree: No one can simply receive their wages — every elf
7 Santa Cargo – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2024-07-en/
A sled always comes with an initial effort of one elf-watt (the standard unit of
10 Christmas Light Show – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2025-10-en/
Author: Lukas Protz (MATH+) Challenge The eager elf Eifi bought a lot of drones
2 Ready, SET, Bake! – Mathekalender https://www.mathekalender.de/wp/de/kalender/aufgaben/2025-02-de/
Hofmann, MATH+ Autor: Lukas Protz (MATH+) Aufgabe Annika ist eine fleißige Elfe
15 Logistic Challenges – Mathekalender https://www.mathekalender.de/wp/calendar/challenges/2024-15-en/
To plan when each of the elves needs to work, the head elf wants to predict the number