Electricity Subtitle

Agenda Presentation 1: Misconceptions MI Activity Show you how you can teach electricity with $5 or less

Can I Power a Clock using a Potato?

Science and math may be theoretical and applied It is a body of knowledge but it also doing, applying and experimenting to develop conceptual understanding and process skills.

Eliciting Misconceptions (Gooding & Metz, 2011) Call for clarification (ask students to further explain, rephrase, illustrate, or demonstrate) Call for evidence (seek substantiation for student claims) Call for evaluation (ask students to speculate beyond the collected data) Wait time I and wait time II (nonverbal tactics that allow students to extend their responses and encourage student-to-student discussion) Play devil’s advocate (provide opportunities for students to present and defend their data-based decisions)

Specific Expectations 2.1 - follow established safety procedures for working with electricity. 2.2 - design and build series and parallel circuits, draw labelled diagrams identifying the components used in each, and describe the role of each component in the circuit.

Specific Expectations 2.3 - use scientific/experimentation skills to investigate electricity. 2.4 - design, build, and test a device that produces electricity – potato clock

Specific Expectations 2.5 - use technological problem-solving skills to design, build, and test a device that transforms electrical energy into another form of energy in order to perform a function

Specific Expectations 2.6 - use appropriate science and technology vocabulary, including current, battery, circuit, transform, static, electrostatic, and energy, in oral and written communication 2.7 - use a variety of forms to communicate

Specific Expectations 3.1 - distinguish between current and static electricity 3.3 - identify materials that are good conductors of electricity

Specific Expectations 3.4 - describe how various forms of energy can be transformed into electrical energy 3.5 - identify ways in which electrical energy is transformed into other forms of energy

Specific Expectations 3.6 - explain the function of components of a simple electrical circuit 3.7 - describe series circuits and parallel circuits, and identify where each is used 3.8 – describe ways in which the use of electricity by society has changed over time

Specific Expectations 1.1 assess the short and long term environment effects of different ways in which electricity is generated in Canada 1.2 assess opportunities for reducing electricity consumption that could affect the use of non-renewable resources in a positive way or reduce the impact on the environment

Select a group to describe how a battery works Interpersonal: prepare a presentation – Musical: prepare a song Verbal Linguistic: prepare a poem or mnemonic Spatial: create a poster Mathematical: Create an outline of the process Intrapersonal: research, record and create an independent representation- try online self publishing tool e.g., glogster, picktochart.com Kinesthetic: prepare a model

Explain how a battery works Include the following vocabulary: Electrons Flow Positive Negative Electrolyte Circuit metal

MIT video https://www.youtube.com/watch?v=aIhk9eKOLzQ

What is Electricity? oxygen The flow of electrons (e are moving!)

Battery The reaction in the anode produces a build up of electrons, and the reaction in the cathode absorbs them. The net product is electricity.

Background Info Volts and Voltage Voltage is a measure of the potential difference of the circuit measured in volts Measured using a voltmeter It is the difference in the ability of the two metals to attract electrons. The bigger the difference, the bigger the voltage.

Background Info Volts and Voltage In a potato clock using copper and zinc as the electrodes, the difference is 1.34 V Potato Clock

Background Info Amperes and Current Current is the flow of electrons through the circuit, measured in amps. Measured using an ammeter

Background Info Ohms and resistance Resistance is how hard it is for the electrons to move through the circuit. Measured using a multimeter Depends on length of wire, cross-sectional area, type of material and the temperature

Background Info Current vs Static This form of electricity exists when charges are able to constantly flow. As opposed to static electricity where charges gather and remain at rest, current electricity is dynamic, charges are always on the move.

$5 Obtain a battery, wire, and light bulb Move through the electricity booklet. The activities allow students to explore circuits Please complete pages 1-5

Circuit Diagrams

Bare Conductive Paint http://www.jonathansblog.net/node?page=1

Chibitronics

basic circuitry!

Simple Circuit

Parallel circuit

Parallel Circuit

Allow students to get creative!