Moving Beyond Syntax: Lessons from 20 Years of Blocks Programing in AgentSheets Alexander Repenning University of Colorado Boulder, Colorado 80309
[email protected] School of Education University of Applied Sciences and Arts Northwestern Switzerland (PH FHNW) Brugg-Windisch, Switzerland
[email protected] Abstract The blocks programming community has been preoccupied the “compute prime numbers” using C++ and Emacs activity with identifying syntactic obstacles that keep novices from learning which, by the vast majority of kids, is considered to be hard to program. Unfortunately, this focus is now holding back research and boring. In the upper right corner is the elusive holy grail of from systematically investigating various technological affordances Computer Science education providing activities that are easy, that can make programming more accessible. Employing approaches or at least accessible, and exciting. This journey started in the from program analysis, program visualization, and real-time lower left corner and is gradually moving towards the upper interfaces can push blocks programming beyond syntax towards the support of semantics and even pragmatics. Syntactic support could right corner. The path of this journey is not straight. It includes be compared to checking spelling and grammar in word processing. setbacks and detours. Also, while progress has been made, the Spell checking is relatively simple to implement and immediately journey is far from over. useful, but provides essentially no support to create meaningful text. Over the last 25 years, I have worked to empower students to create their own games, simulations, and robots. In this time I have explored, combined, and evaluated a number of programming paradigms.