Main goal of this channel is to create and share animated presentations of digital content which may facilitate conceptual and procedural understanding e.g. for complicated tasks such as applying steps of an algorithm. Video-making technique is screencasting PowerPoint presentations (sometimes mixed with other applications e.g. GeoGebra applets). PowerPoint files may take long to prepare, but the quality of the represented information (visual component) is rather optimized. Another collection of videos (almost 400, in greek ) have been also uploaded (not on YouTube) as a tutorial for a high school module concerning the principles of programming (data types, logical expressions, If statements, loops, arrays and subroutines) and problem solving algorithms. Each video is short-time length, dealing with a single task/question e.g. introducing a concept followed by an example or solving a problem.