`Conductors and InsulatorsLeona Williams                 Cregier Vocational High School                               2040 W. Adams St.                               Chicago, Illinois 60612                               312-997-3690Objectives:1. To provide an understanding of basic electrical terms.2. To compare the electric current flow in conductors and insulators.3. To teach the operations of a series circuit by designing a quiz board.Materials:(For each group of four)wood                           12 volt automotive bulbsrubber                         socketsglass                          electrical wirepaper clips                    piezo buzzers1.5 volt dry cell              battery holderscardboard                      nailsaluminum foil                  coinsplastic                        paperRecommended Strategy:(Teacher Preparation)Prepare four series circuit units for testing materials.  Each unit will consist of a light or buzzer connected to a battery and placed on a wooden board for support. All materials will be separated into five stations on laboratory desks.  Students will be divided into groups. Activity 1Students will test 10 different objects to determine if they are conductors or insulators.  All data should be recorded. Activity 2Construction of quiz board.Remove the insulation from 4 pieces of electrical wire for about 1 inch on both ends.  Wrap several turns of one end around a paper clip.  Wrap the other end around a second paper clip.  Repeat process until you have four wires with paper clips at each end.  Place a 1.5 volt battery into holder.  Connect piezo buzzer to the battery.  Prepare questions and answers for quiz board.  The correct pairs have to correspond to your wiring.  Arrange the wiring on the quiz board to conform to it.  Whenever a question is answered correctly, by placing the wire from the buzzer to paper clip next to the question and a second wire from buzzer to the paper clip next to the answer, the circuit will be completed and the buzzer will sound.  Students will return to seats.  A question and answer period will follow.                               Results:After we connect a wire between the terminals of an electric cell, we find that there is an electric current in the wire.  A wire that will carry or conduct an electric current is called a conductor.  In order to have a current, there must be a complete circuit of conductors, a path that the electrons can follow back to their starting point.  Insulators are materials that cannot easily conduct an electric current. `