Max Robotics — Global Service Robot Directory + US Certification

About

Alexander Repenning is a pioneer in educational technology and computational thinking, best known for his foundational work on block-based programming environments. His research centers on making programming accessible to novices, particularly children, through intuitive, rule-based systems. Repenning’s major contributions include the creation of AgentSheets and LEGOsheets, which transformed how young learners engage with coding by replacing syntactic barriers with visual, drag-and-drop interfaces. His seminal paper, “Moving Beyond Syntax: Lessons from 20 Years of Blocks Programming in AgentSheets” (65 citations), critiques the field’s overemphasis on syntax and advocates for broader affordances in programming tools. Repenning also developed the Hourglass Challenge, a novel approach to experiencing computational thinking through block-based programming. His work on LEGOsheets (44 citations) enabled children to program physical robots, bridging digital and tangible play. With over 120 citations across his most influential papers, Repenning’s impact is evident in the widespread adoption of block-based languages in classrooms worldwide. His achievements include leading the Visual Programming Challenge and advancing participatory theater with autonomous tools, cementing his legacy as a visionary in human-computer interaction and CS education.