Here are some courses I have taught:

• analytic geometry
• algebraic number theory
• didactics of mathematics
• group theory
• linear algebra
• logic and set theory
• probability theory
• introduction to algorithms (for the Cognitive Science major)
• introduction to computer science and programming
• programming in C++
• ring theory
• mathematics (for the majors: Biotechnology, Oceanography and Physics)
• information technology (for the majors: Mathematics, English Philology, German Studies, Iberian Studies, Global Communication, Journalism and Social Communication, Theology)
• “How to describe beauty?” (lecture for a general audience)

Supervised theses (initials only):

• 2025 – M.B., Introduction to Drinfeld modules (Bachelor's thesis)
• 2024 – K.D., Exceptional modules are tree modules (Bachelor's thesis)
• 2024 – V.P., Foundations of representation theory (Master's thesis)
• 2023 – U.P., Matroids (Master's thesis)
• 2022 – F.G., Representation types of algebras (Bachelor's thesis)
• 2021 – A.K., Auslander–Reiten quiver (Master's thesis)
• 2019 – A.K., Extension spaces via Ringel maps (Bachelor's thesis)
• 2019 – K.C., Algebraic closure of a field (Bachelor's thesis)

Educational publications:

• D.E. Kędzierski, The concept of the number line in the spiral teaching approach, Refleksje ZCDN 2 (2023), 86–98.
• D.E. Kędzierski, Undivided thoughts on arithmetic, Refleksje ZCDN 1 (2023), 69–83.
• D.E. Kędzierski, Struggles of the mind, Refleksje ZCDN 2 (2022), 88–96.
• B. Bogdańska, I. Fertała, D.E. Kędzierski, N. Kędzierska, I. Staniewska, M. Szuman, Auxiliary materials for first-year high-school students, Volumina.pl (2019).

Innovative teaching programs:

• Remedium calculations – an original educational program focusing on eliminating common mathematical misconceptions of first-year high-school students and developing deductive reasoning skills. Implemented in 2019/2020, 2021/2022 and 2023/2024 at V High School in Szczecin.
• Creation of Auxiliary materials for first-year high-school students as part of the program (2019).
• Preparation of methodological materials for mathematics teachers in the publication series of the Szczecińska Szkoła Ćwiczeń (2020).

Workshops, teacher training and educational activities:

• Organisation and delivery of open mathematics lessons for university students (2021): Linear functions, Trigonometry, Arithmetic and geometric sequences, Quadratic functions.
• Mathematics workshops for teachers: Mathematical induction – introduction and applications in school teaching (2020).
• Preparation of two methodological handbooks for students undertaking teaching practice (2020).
• Conducting mathematical classes for talented high-school students within IPN (2019/2020).
• Leading mathematical clubs (“Algebraic Five”) for high-school students (2018–2020).