How to Teach a Lesson on Electricity By: John N. DiCamillo
Curriculum and Pennsylvania Standards Physical Science, Chemistry, Physics, 3.4 Section 3.4.7 (B) Section 3.4.7 (B) –Relate energy sources and transfers to heat and temperature –Explain the parts and functions of an electrical circuit.
Curriculum and Pennsylvania Standards Section 3.4.4 (B) -Know basic energy types, sources and conversions -Apply knowledge of basic electrical circuits to design and construction -Classify materials as conductors and insulators -Describe static electricity in terms of attraction, repulsion and sparks. repulsion and sparks.
Most atoms have the same number of protons and electrons, the atom is neutral and has no charge! Protons are located within the nucleus and never leave the atom -Electrons have a negative charge -Protons have a positive charge -Protons have a positive charge A positive charge and a negative charge attract each other A positive charge and a negative charge attract each other A positive charge and a positive charge repel each other A positive charge and a positive charge repel each other A negative charge and a negative charge repel each other A negative charge and a negative charge repel each other
Lightning is defined as a giant spark of electric charges moving between: 1. A cloud and the ground 2. Between a cloud and another cloud 3. Or within a cloud The movement of the electrons is the flash of light that we see as lightning! LIGHTNING
Electric Currents Electric Current is the steady flow of electric charges, usually within a wire 1. Metals are classified as conductors. Metal wires are conductors because they allow electrons to move easily 2. Plastic is classified as an insulator. An insulator does not allow electrons to move easily.
Electric current of a flashlight Follow the path of electrons through the circuit. 1. Electrons leave the negative end of the left battery 2. Electrons move through the wire 3. Electrons enter the light bulb and move through the tiny wire within the bulb. The wire gets hot and glows brightly 4. Electrons leave the light bulb and move into the positive end of the right battery 5. Electrons travel through the right battery, out the negative end and into the positive end of the left battery.
Lab: Lets Build a Circuit! 1. Schedule lab time 2. Secure the following materials 30 battery holders30 battery holders 30 switches30 switches 120 8” pieces of 22 gauge wire, single120 8” pieces of 22 gauge wire, single 1 wire stripper1 wire stripper 30 mini flashlight bulbs30 mini flashlight bulbs 30 light bulb holders30 light bulb holders
Lab: Lets Build a Circuit 3. Provide each student with the supplies needed to build their own circuit 4. Once the supplies are distributed, ask the students to build a circuit based on the previous days lessons 5. Assessment will be based on successful completion of the circuit where the student’s light bulb illuminates.