隨著科技與電腦設備的提升，兒童繪圖素材日趨豐富；直覺式數位畫筆利用筆勢的操作取代圖像式使用者介面(GUI)點選，於前人研究已確定有較佳的績效。本研究以10~12歲的國小高年級學童為目標族群，設計屬於直覺式數位畫筆的視覺回饋，讓兒童於操作過程中，能依其回饋發展出合適的心智模型，使整體繪圖作業有更佳的流暢性。

　　研究第一階段依前人研究與文獻，定義畫筆功能與操作動作後，利用兒童與專家所組成的多層次焦點團體法，發散思考各操作動作可能的視覺回饋。第二階段以模擬與操作任務的方式，由兒童進行概念評估，依問卷量表與訪談內容所得各設計方案的優缺點和排序再進行細節調整，確立最終視覺回饋介面。研究最後階段則經模型製作與系統實作，驗證視覺回饋之可行性。

　　由執行連續任務的結果來看，經實驗流程所求得之視覺回饋介面能幫助使用者有更流暢的表現；於主觀量表也可確定相較於對照組，實驗組有較佳的效用性、滿意度與移動相容性；在自由繪圖階段，實驗組因介面的設計安排保留給使用者較大的繪圖空間，致使實驗組於粗細功能的切換次數明顯高於對照組。從上述系統驗證結果可確定，本研究經發散至收斂的設計過程，能求出適合直覺式數位畫筆的回饋介面，並提供給使用者更好的繪圖經驗。

With the advancement of technology and computer equipment, drawing tools for child become more diversified. The study of intuitive operation digital brush which used a pen as an input device to replace graphic user interface has been confirmed with better performance in previous studies. This study bases on visual feedback of intuitive operation for 10-12 years old child. Consider an appropriate interface with operation to create accurate mental models for users, in order to improve processing fluency and efficiency.

In the first stage, defined functions over literatures and experiment results before. After that, through focus group explore the possibilities of interface design on each function. And in the second stage, this study involved child as subjects to evaluate concepts. Use child’s evaluations and judgments to redesign the detail of concept. Finally, through modeling and coding to establish a drawing system for performance test and subjective evaluation.

Three finding are described in the last experiment of experimental group: (1) it shows a better performance in processing fluency. (2) higher subjective evaluation in effectiveness, satisfaction and conceptual compatibility. (3) larger drawing spaces make plentiful strokes. The above results show the design process in this research can provide an appropriate interface and drawing experience for users.

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