Playground: an object-oriented simulation system with agent rules for children of all ages
J. Fenton, Kimberly E. Beck · 1989
Programming languages for children have been limited by primitive control and data structures, indirect user interfaces, and artificial syntax. Playground is a child-oriented programming language that uses objects to structure data and has a modular control structure, a direct-manipulation user interface, and an English-like syntax. Integrating Playground into the curriculum of a classroom of 9- to 10-year-olds has given us valuable insights from the programs intended users, and confirmed many of our design decisions.