工業設計透過手繪、3D建模、展版呈現，能與客戶更詳細的溝通和精確地了解其外觀樣貌和使用功能。然而，專家在產品的表現技法中，能運用經驗與技巧，將原本的設計概念處理得更清晰與吸引人。本研究目的為：讓新手學習專家如何以專業眼光評價草圖，並將專家之評價作為識別教學課程設計，提供一個明確的學習目標，提升整體繪圖技能。
本研究運用評價構造法(EGM, Evaluation Grid Method）針對專家對於圖面的專業評價進行調查，擬訂草圖專業評價之準則。接著，將準則設計為輔助學習教材，提供初學者自我檢核與能力補強之用途。
實驗結果採用成對T檢定，探討受測者在實驗後，對於技能之提升是否有顯著影響研究結果顯示：教材在設計流程「ideate」中給予學生之輔助學習有正向提升。且教材不論投入哪個階段，學生皆在「Detail Design」會有明顯提升的表現。最後，有七項準則，可透過觀念的快速傳遞，讓圖面有提升的正向影響，分別為：「符合圖學邏輯的繪製」 、「整體繪畫風格的呈現」、「有吸引力的外觀設計 」、「精準的產品概念說明」、「焦點視覺方向的建構」、「吸引人的畫面張力」、「明確的資訊傳達」; 而有四項準則，則是需要更多時間磨練才能進步之觀念，分別為：「流暢率性的線條表現」、「襯托主體的技巧」、「有層次感的版面配置」、「均衡的佈局」。

Industrial design communicates more detail to customers and provides an accurate understanding of design appearance and application through sketching, 3D modeling, and panel displays. However, with regard to the technique of expression of products, experts depend on experience and skills to make the original design concept clearer and more attractive. The purpose of this study is to let novice learner-experts evaluate a sketch in a professional way. Moreover, these professional evaluations were used in the design of a learning through identification course that provides a clear goal of study as well as enhances the overall drawing skills of students.
In this study, the Evaluation Grid Method (EGM) was used to investigate the professional evaluation of the drawings and develop the criteria for professional sketch evaluation. Then, guidelines were designed as supplementary learning materials that were provided to beginners for self-examination and reinforcement of capability.
The Paired-Sample T-Test was used to investigate the results of the study and see whether the experiment had a significant effect on the improvement of the skills of the subjects. Study results showed that in the “ideate” stage, the supplementary teaching materials given to students had a positive effect. Furthermore, regardless of when the teaching materials were introduced, students showed a significantly improved performance in “detail design”. Finally, through the rapid transfer of concepts, images can be enhanced through the following seven criteria: “satisfy basic drawing logic”, “a technique that showcases the main subject matter”, “attractive exterior design”, “precise product descriptions”, “construction of a focal point and visual direction”, “dramatic tension on the image”, “clear delivery of information”. Moreover, a longer period of time is required for honing the following four criteria and to ensure progress. These criteria are “smooth and direct lines”, “overall drawing style”, “hierarchical layout”, and “comfortable layout”.

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