The aim of this study is twofold, first is to create an in-service training example that can be conducted with childhood education teachers in framework of transformative learning towards learning for sustainability and education for sustainable development.Second aim of study is to investigate effects and contributors of created transformative learning example on participants' perspective transformation. 24 teachers were involved as convenient sample in this research. Research methodology combined two basic data gathering and analysis methods. Sample group participated in seven half day in-service training, at the end of training initial inquiry was conducted by using Learning Activities Survey with all participants and it was continued with 6 follow-up interviews. Assessment tool and interview format were developed by Kathleen P. and were translated in Turkish and adapted for the use of this research.The results of this research revealed that 100% of participants experienced perspective transformation at varying degrees in relation to in-service training conducted. I want to thank GEZER family for their encouragement, support and love.My dear family; Meltem, Nilgün and Ferhat FERĠVER. I would like to indicate my gratefulness to them for belief in my success and endless moral support. Last but not least, my special thanks go to my husband, Ufuk, for his love, endless encouragement and creativity :)xi