A TIME workshop for mathematics teachers in secondary schools was held at the National Educational Institute Slovenia on the 6th May, and some primary school teachers also joined. Participants listened to presentations about IBMT and Lesson Study, introduced by the project members from University of Ljubljana. Also, the guidelines for study and planning were introduced through interactive activities with participants, and the highlight of the workshop were presentations by members of two school project teams. The team from Gimnazija Franca Miklošiča Ljutomer and the team from Gimnazija Jesenice presented how they conducted the Lesson Study at their schools and how they learned and progressed as a team. With the help of lesson study recordings in the classroom they presented the »Apricot Jam« scenario and »Birthday Problem« scenario.