Above and over and above, it is important for students not just to make use of models within their science training but also gain understanding about the nature and reason for scientific models (Grosslight et al, 1991, Vehicle Driel and Verloop, 1999). Moreover, learning to model should be an interpersonal procedure that involves dialogue and negotiation of meaning, as this provides the best opportunity for each student to construct the desired knowledge (Harrison and Treagust, 1998).
However, like a research suggests (Grosslight et al., 1991), students should have more experience in using models as instruments for learning and knowledge with discussions underlying typically the role of models inside scientific concepts. Wilensky and Reisman (2006) highlight the particular need for further experience with models in research education by saying that all students keep pace with understand science and the planet around them. Besides, when students manage to attain modeling skills they may use them in novel situations in the domain of instruction (White, 1993, White and Frederiksen, 1990).
The make use of of models in technology education requires great effort and there are problems not only students yet also teachers need to overcome, in order in order to achieve meaningful and efficient use of modeling. Training students about models in addition to modeling has proven the quite challenging and hard job (Schwartz & White, 2005). However, research showed that neither students nor their teachers possess efficient knowledge about the nature and reason for scientific models (Van Driel & Verloop, 1999).
Consequently, a few students fail to realize the purpose of interesting with the modeling process (Barrowy & Roberts, 1999) and they also might not realize the nature of designs or modeling, even if these are engaged in creating and revising models (Carey and Smith, 1993; Grosslight et al., 1991). On the other hand research has shown (Louca & Constantinou, 2002) that studying about models and building can be accomplished in early middle school ages by simply guiding students through a process of developing and refining models about natural phenomena. As a result teacher’ s role within teaching science through an efficient and successful building approach is important.
Teachers should build their knowledge in training scientific concepts and achieve self-efficacy in teaching plus as Bandura (1981) states self-efficacy can be enhanced through modeling. Similarly, Enochs et al. (1995) help that in order for elementary teachers to achieve self-confidence, well planned and modeled based lessons are required. Also, when college students are building models and taking advantage of their own analogies, as an alternative of those of teachers, may be more benefited (Harrison and Treagust, 1998) and also this is due to the truth that students’ analogies usually are more familiar and easier to understand (Zook, 1991).
On the other hand, students find it difficult to choose appropriate analogies, so they assume from the teacher to give an analogy or a model, even if they have difficulties in umschlüsselung it (Harrison and Treagust, 1998). Moreover, some problems that students find when trying to construct meaning in science are due to the fact that they don’ t have got efficient ability and understanding in developing conceptual types of physical phenomena (Golin, 1997). Consequently, teachers should make use of analogies and models in their teaching through an method that requires focus, action plus reflection (Treagust et al., 1998).
Likewise, thinking about the importance of hand-on lessons, primary teachers ought to continuously improve their teaching procedures especially in the section of hands-on activity planning (Dickinson et al, 1997). Building teaching practices can become an appropriate and useful tool, since they market teaching though practical demos (Hudson, No date). Even though, some times models used in physics only demonstrate the end product regarding physics to students (Steinberg, 2000), something that can limit students critical pondering and take from these people the opportunity to observe to see new phenomena by themselves.