This study aims to develop an electronic library-based learning environment to support teachers in developing web-based problem-solving activities and analyzing the online problem-solving behaviors of students. Two experiments were performed in this study. In study 1, an experiment on 103 elementary and high school teachers (the learning activity designers) has been conducted to understand their views toward an electronic library-based learning environment. The results showed that with this innovative approach, electronic libraries not only have the potential to support traditional in-class learning, but also can assist teachers in developing learning activities for training students in web-based problem-solving abilities. Moreover, teachers of different ages and backgrounds all readily accepted the new approach, in particular, the older and more experienced teachers showed even higher willingness to use the system than the younger and less experienced teachers. In study 2, a quasi-experiment on 62 elementary school students (experimental group with 31 students and control group with 31 students) has been undertaken on a natural science course for evaluating the effectiveness of the proposed approach. Experimental results showed that this innovative approach can improve the students' learning achievements and attitudes in comparisons with the conventional web-based learning approach. (Contains 6 tables and 8 figures.)