Step 3: As always, working in groups enhances the students’ understanding and
minimizes the teachers’ involvement. Therefore, it better allow students to work in groups.
Once the groups of three or four students are formed, it is time to construct the 3-D model of the circuit. The initial skeleton frames of the circuit that the students will construct need not to be as complex as described in Figure 2 and Figure 3 so as to make them get familiar with the model building. Students can initially construct the three-dimensional model of the circuits by using wires. It is also necessary for the teacher to give some guidance in the beginning of the building of the model. It is crucial to emphasize that the voltage rise in the 3-D model is represented by the heights of the wire corresponding to the battery.