[ACM Press the 3rd ACM SIGSMALL symposium and the first SIGPC symposium - Palo Alto, California, United States (1980.09.18-1980.09.19)] Proceedings of the 3rd ACM SIGSMALL symposium and the first SIGPC symposium on Small systems - SIGSMALL '80 - What makes things fun to learn? heuristics for designing instructional computer games

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