The study aimed to investigate the effects of Lesson Study on the self-efficacy beliefs of pre-service kindergarten teachers. A quasi-experimental design with two parallel groups was used. The sample consisted of 49 students divided into a control group (27) and an experimental group (22). The pre-service kindergarten teachers in the experimental group followed an adjusted Lesson Study design, while the control group followed the traditional way of pre-service teaching practice. Findings indicate that there was no significant difference in teacher self-efficacy total scores between the groups, but there was a significant difference in the self-reported competence to effectively teach mathematics lessons and ability to get and keep pupils motivated.

Most pre-service teachers work individually in preparing their teaching and learning activities and rarely work closely with others. The purpose of this research was to investigate pre-service teacher pedagogical knowledge through lesson study. Data were collected with the use of an interview and observation. Qualitative data were analyzed in four stages: organizing data, exploring and sorting data, descriptive analysis, invention interpretation, and validation. Results indicated that lesson study enhanced pedagogical knowledge of the pre-service teacher in planning, preparation, teaching strategies, problem-solving, classroom management, questioning skills, and assessment. Lesson study enhanced the pre-service teacher’s experience by comprehensively focusing on all facets of school in learning and teaching settings offering learning experiences.