The Web page about dissolve concept in this study included teaching module, conceptual teaching with
animation, virtual experiments, multiple assessments on line and the illustrations of scientific histories. The
participants need to learn the dissolve concept on this Web page for three weeks (45 minutes per week, total:
135 minutes) (see Figure 2). If they had any questions, they could ask the science teacher in this study.
The learning motivation scale. All of the students needed to write down the learning motivation scale
(Likert scale) which was developed by this study (α = 0.86; total items = 7 items; total scores = 120 scores)
before and after the employment of different learning strategies (see Figure 2).
There are four dimensions in the learning motivation scale which involved self-efficacy, goals of
performance, the values of learning and the sense of achievements. Each dimension included six items, and
there were 24 total items in the learning motivation scale.