抄録
We have conducted to develop the computer assisted instruction system which provides an e-Learning environment for drawing practice. In this study, we propose two functions of the system to find out mistakes on the projection view without the help of teachers. The first function realizes that the system generates 3-dimensional object based on the projections drawn by the learner. In the case of the incorrect projections, such as lack of lines, mismatch between each view, etc., are provided, the unnatural shaped object is shown on the display so that the learner can easily understand one's mistakes in projection. The second function is used for checking the line type on the projections. This function informs the learner about the mistake of hidden outline by using the 3-D object with colored lines. The prototype system was developed and examples of execution were demonstrated.
