In addition to GLAT Workshop Syllabus and Materials, Guide for Teachers was prepared to help teachers in the process of designing innovative learning activities for the development of algorithmic thinking. The guide is one of the results of the Erasmus+ project GLAT (2017-1-HR01-KA201-035362). The guide brings lessons about topics related to algorithmic thinking and basic programming concepts as well as those about teaching and learning strategies that can be used for the development of algorithmic thinking and learning programming. Lessons include references to examples of good practice, templates and tools for preparing or conducting learning activities.