A few students in your class may have arrived at this point ahead of the rest of the class. They may have covered the early sections of this course in primary school. A few of the more able students may have found the preceding sections easy and completed them ahead of the rest of the class.
Since this station requires more discussion and explanation and teacher input than the others, it is wise to have the whole class together at this point. Those students who have been working ahead could spend some time on the activities on the 'Effects-of-electricity' line before beginning this station.
This activity is designed to elicit from the students their present understanding of the concepts related to electric circuits and currents. The diagrams in the student materials illustrate the four models that students often put forward.
This discussion is not intended to be a teaching lesson. Rather it lays a foundation for the following teaching lessons.
Students will be asked to refer back to these ideas at the end of the module.