Table 1.

Scale analysis and sample items of the recorded constructs [7 (translated), 23 (translated), 71].

Scale	Number of items in the questionnaire	Reliability of the statement	Subject-specific	Example item
TK	6	0.88	X	I have the technical skills I need to use technology.
CK	3	0.81	✓	I have sufficient subject knowledge in my 1st subject.
PK	6	0.84	X	I can adapt my teaching style to different learners.
PCK	6	0.84	✓	I can help my students understand the knowledge of my 1st subject in a variety of ways.
TCK	5	0.84	✓	I know about digital technologies that I can use to help students better understand and apply the content of my 1st subject.
TPK	9	0.91	X	I can use strategies that combine content, technologies, and teaching approaches that I learned about in my coursework in my classroom.
TPACK	8	0.91	✓	I can combine subject knowledge of my 1st subject, digital technologies, and teaching methods in the classroom in such a way that they support the teaching process efficiently.
ALDM	8	0.85	X	Digital media should generally be given a strong weighting in school curricula.
MUDM	6	0.88	X	I am very excited to consider how I can better support the learning of my (future) students using digital media.