CAI system to improve hand writing skills by means of fuzzy theory

The part of a hand writing skills improving CAI (computer assisted instruction) system for elementary schools is developed for five Japanese characters in this study. Similarity evaluation functions (membership functions) are designed for beginners', medium and higher grades from the standard characters which we believe well balanced. In the beginners' grade, two types of learning, tracing and copying, are introduced. A promotion is automatically decided from the average score of the last three times of similarity evaluations using fuzzy inferences. Furthermore, in the medium and higher grades, each stroke is compared with that of the standard character and proper instructions are given to improve the hand writing skills detailed.<>