catrobat conference 2021

Catrobat Computational Thinking Conference 2021

Online Conference – 24th September 2021 (Friday)

Catrobat Festival 2021

Online & On-site Festival – 25th & 26th September 2021 (weekend)

In 2021, Catrobat celebrates its 11th anniversary!​

In 2021, Catrobat will celebrate its 11th anniversary with a virtual online Conference on 24th September 2021. The conference will be followed by an online as well as on-site Festival for contributors and users on the weekend of 25th and 26th September 2021. The on-site part of the Festival is planned to take place in Graz in Austria, Europe (depending on the ongoing pandemic). 

We invite you to participate with a submission for a Talk, Demo or Workshop that focuses on visual block-based programming, computational thinking, and creativity, design and making in coding education. We welcome submissions from multiple sectors and disciplines, including but not limited to academia, industry, and education, aiming for transdisciplinary understanding.

Key areas of interest

Key areas of interest are (but not limited to):​

Key dates​

  • Submission deadline extended: 23rd August 2021 (10:00 pm CEST) 
  • Virtual conference: Friday 24th September 2021 
  • Catrobat Festival: Weekend of 25th and 26th September 202

If you have any questions, please contact us via


Attendance is free but a registration is necessary. Please note that registration is also necessary for authors.

Keynote speaker

Computational Thinking: Conceptual and Methodological Challenges

Eva Marinus
Schwyz University of Teacher Education (PH Schwyz), Institute Media and Schools, Switzerland

Angels, Demons & Computational Thinking

Jens Möning 
Researcher at SAP,  Creator of  Snap!, Germany

CCTC’21 Programme

Find a more detailed programme with speakers, abstracts, and descriptions here:

Please note that times are in Central European Summer Time Zone UTC+2. We will use two Zoom-Rooms: “Room A” for tracks on “Experiencing Computational Thinking in Education” and “Room B” for tracks on “The Psychological Foundations of Computational Thinking”. The Welcome Session, the two key notes, and the Closing will take place in Room A. For the workshop and demo sessions all will meet in the same room (Room A) and will then split in different BreakOut-Session (as a participant you can still decide spontaneously which session to choose – no preregistration is necessary). 


Please note that all sessions will be recorded. If you do not wish to appear on the video, please turn off your video and change your name once you are in Zoom.

8:30 – 09:00

Come together in (same password as for zoom)
Check-In Zoom until 9:00 (Room A

09:00 – 9:30

Welcome and Opening of the Conference (Room A

 9:30 – 10:30

Keynote presentation I: 
Jens Mönig, Researcher at SAP,  Creator of  Snap!

“Angels, Demons & Computational Thinking”

Conference splits into ZOOM Room A and Room B

Room A: Experiencing Computational Thinking in Education I




Session I
Parallel Workshops: Programming Education


Wolfgang Slany


10:35 – 11:25

Workshop 1Programming in a spiral curriculum from kindergarten to sixth grade

Jacqueline Staub, ETH Zurich

Workshop 2: ManuCode: Coding & Robotics!

Martin Kandlhofer, Austrian Computer Society (OCG)

Workshop 3: Programming with Calliope Mini

Franka Futterlieb, Jørn Alraun, Calliope CC

Session II

Bernadette Spieler




Talk 1: Modeling with Scratch in Science Education

Michael Weigend, WWU Münster 

Talk 2: Game Based Learning: Implementation in School

Justin Edwards, Microsoft Minecraft

Room B: The Psychological Foundations of Computational Thinking I




Session I


Karin Landerl





Talk 1: Latent profiles in computational thinking

Josef Guggemos, University of St. Gallen

Talk 2:  The Cognition of Programming: Which Cognitive Skills Predict Programming Performance following a University Computing Course?

Irene Graafsma, University of Groningen

Talk 3: Keeping computations in mind: How working memory contributes to computational thinking

Ferenc Kemény, University of Graz

Co-Authors: Sabrina Finke, Bernadette Spieler, Bernd Binder, Karin Landerl

12:15 – 13:15

Lunch Break

Come together in (same password as for zoom)

13:15 – 14:15

Keynote presentation 2:  (Room A)
Eva Marinus (Schwyz University of Teacher Education)

“Computational Thinking: Conceptual and Methodological Challenges”

Conference splits into ZOOM Room A and Room B

Room A: Experiencing Computational Thinking in Education II




Session III
DACH Teacher Panel 


Bernadette Spieler

14:15 – 15:10

DACH Teacher-Panel: Making im Schulkontext (in German)

Bettina Waldvogel, PH Schaffenhausen (Schweiz)

Mirek Hancl, LeG Uelzen (Deutschland)

Nanna Sagbauer, HTL Hollabrunn (Österreich)

Michael Pollak, “Bildungsetzwerk Technik Österreich” 

Session IV
Pocket Code / Catrobat

Vesna Krnjic


15:15 – 16:10

Demo 1: Cybersicherheit – spielerischer Unterrichtsansatz
 (in German)

Verena Buder, Graz University of Technology 

Demo 2: KOALA – Online-Plattform zum Erlernen von Programmiersprachen

(in German)

David Andrews, bits4kids

Demo 3: Computational Thinking and CATROBAT 

(in English)

Wolfgang Slany, Catrobat Team

Room B: The Psychological Foundations of Computational Thinking II




Session II


Ferenc Kemény


















Talk 4: Numerical foundations of computational thinking: The roles of mental arithmetic and arithmetic problem-solving

Sabrina Finke, University of Graz

Co-Authors: Ferenc Kemény, Karin Landerl

Talk 5: The Computerized Adaptive Programming Concepts Test (CAPCT) – Designing, Testing, and Practical Implications

Sally Hogenboom, University of Amsterdam

Co-Authors: Felienne F. J. Hermans, Han L. J. van der Maas

Talk 6: Cognitive Correlates of computational thinking in primary school students

Manuel Ninaus, Department of Psychology, University of Innsbruck

Co-Authors: Katerina Tsarava, Korbinian Moeller

Talk 7: Techniques for solving complex problems in computer Science

Bernadette Spieler, Zurich University of Teacher Education


Summary and Close of the Conference (Room A)


Gathering in Networking in Small Groups to Catch up with Colleagues and build New Connections 

Link: (same password as for zoom)

Organizing Committee​

Wolfgang Slany
(Graz University of Technology)

Vesna Krnjic
(Graz University of Technology)

Michael Herold 
(Graz University of Technology)

Bernadette Spieler (Zurich University of Teacher Education)

Karin Landerl
(University of Graz)

Ferenc Kemeny
(University of Graz)


Sabrina Finke
(University of Graz)