In this research we present how a group of Finnish adult preservice teachers (n=21) incorporated 21st CS through their methods of working instructional methods in the final practicum in autumn 2013. The research material consists of pre-service teacher's practicum plans, taped lessons and written practicum synthesis. The nature of teaching has changed significantly during the past decades, as a result of which teaching has never been more difficult or more important. This is a challenge also for teacher education programs. The adult teacher education program at Kokkola University Consortium Chydenius focuses on developing 21st century skills (21st CS) to enhance the use of technology, to support critical thinking and problem solving, and to enable collaboration and creativity during studies. Our curriculum is designed to produce deep understanding and authentic application of 21st CS in all practicums. Because Finnish teachers are free to choose their methods, it is important that pre-service teachers are aware of 21st CS. The current Finnish national curriculum includes some 21st CS, such as learning through peer interaction, helping students (= pre-service teachers) take responsibility for their learning, and helping them develop strategies for applying skills in novel situations. At the moment, Finland is in the midst of a curriculum reform that includes consideration of adopting 21st CS more clearly in learning situations. We found that 21st CS were taken into account in planning learning environments, but how to apply 21st CS in classroom demanded deeper understanding and abilities of applying these skills in practice.