`ElectricityMarie MCCadd                   Coles Elementary School                               8441 S. Yates                               Chicago IL 60617                               312-535-6550 Objectives:To explain how objects can receive a static electrical charge. To describe the effects of bringing objects with like and unlike chargesnear one another.To compare conductors and insulators.To identify and diagram a series circuit and a parallel circuit.To explain the function of a fuse.Materials:T.V. set, string, chalk, balloons, wool cloth, thread, chalkboard, watersprayer, size D batteries, battery clips and holders, small bulbs (#41 & #48),sockets for small bulbs, copper wire, objects to test as conductors, paperclips, plasticine, and strands of steel wool.Strategy:1.  The students will perform the following activities to understand how objects     receive a static electrical charge:  Let the string hang about one inch from     the front of the T.V. set.  When the television is turned on, the string     will be repelled or attracted to the television screen.  Students will     inflate several balloons.  They will rub the balloons with a wool cloth to     create an electrically charged surface.  These balloons will cling to the     classroom ceiling and to a chalk drawing of a shelf on the chalkboard. 2.  The students will perform the following activities to understand the effects     of bringing objects with like and unlike charges near one another: Students     will inflate two balloons to the same size and tie a string to each balloon.      Both balloons will be given negative charges by rubbing them with a wool     cloth.  They will repel one another.  Next, one of the balloons will be     given a positive charge.  This balloon will be attracted to the negatively     charged balloon.  The balloons will be sprayed with water to neutralize     them. 3.  The students will perform the following activities to compare conductors and     insulators:  Using a simple series circuit with one small bulb, each student     will test objects to observe which materials permit a flow of electrons     (conductors) and which materials do not permit a flow of electrons     (insulators).  Each student will list items tested and test results on a     chart. 4.  The students will perform the following activities to understand series and     parallel circuits:  After learning how to read a circuit diagram, each     student will construct a series circuit and a parallel circuit.  The     students will make observations about what happens when one bulb is removed     from each of the different types of circuits.  They will also observe which     circuits have brighter bulbs. 5.  The students will perform the following activities to understand the     function of a fuse:  Using uncomplicated written directions, each student     will make a fuse.  The students will observe what happens to a fuse when too     much electricity flows through the wires. Performance Assessment:1.  Using a diagram and sentences, explain how lightning is a form of static    electricity.2.  What type of circuits are used in buildings?  Explain.3.  Describe a safety device that is used as part of a circuit.  Explain how     it works.`