get connected with ohm’s law
DESCRIPTION
Get connected with Ohm’s Law. Jan Randewijk WCED and Nico Beute IEEE & CPUT. Overview. IntroductionNico 5 min Educational issuesJan10 min Documents & materialsNico 5 min ExperimentJan40 min ConclusionNico 10 min. Objective. - PowerPoint PPT PresentationTRANSCRIPT
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Get connected with Get connected with Ohm’s LawOhm’s Law
Jan Randewijk WCED andJan Randewijk WCED and Nico Beute IEEE & CPUT Nico Beute IEEE & CPUT
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OverviewOverview
• Introduction Nico 5 min
• Educational issues Jan 10 min
• Documents & materials Nico 5 min
• Experiment Jan 40 min
• Conclusion Nico 10 min
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ObjectiveObjective
• To enable engineers to lead a training session for teachers on an engineering related topic
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Understand Understand the educational systemthe educational system
– Educational terms• Curriculum• Outcomes {CO , DO & LO}• Assessment standards
– Educational environment• Knowledge of learners• Knowledge of teachers
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HowHow
• Make it practical – give examples from the workplace
• Keep it simple
• Try it out today
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Educational IssuesEducational IssuesJan RandewijkJan Randewijk
• Critical Outcomes
• Developmental Outcomes
• Learning Outcomes
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Documentation and MaterialsDocumentation and MaterialsNicoNico
• Get documents ready before presentation– The IEEE has a number of well prepared sets
• Update for South African use in consultation with your education department
– Draw up documents for scratch– Requirements:
• Must enable teacher to present lesson• Must consider the educational environment
– Affordable
– Level of knowledge of learners
– Technical knowledge of teachers
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DocumentsDocuments
• Introduction• Curriculum framework and
assessment standards• Background information for teachers• Lesson plan guidelines• Materials required• Possible extra activities• Student handout
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MaterialsMaterials
• Affordable
• Easily obtainable
• As practical as possible
• Robust
• Re-usable
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Alignment to National Alignment to National Curriculum StatementsCurriculum Statements
• Note: All lesson Plans in this series are aligned to the Further Education and Training (FET) National Curriculum Statements (NCS) for Electrical Technology.
• National Curriculum Statement builds its Learning Outcomes for Grades 10 – 12 on the Critical and Developmental Outcomes that were inspired by the Constitution and developed through a democratic process.
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The ExperimentThe ExperimentJan RandewijkJan Randewijk
• Continuity tester (page 19)
• Ohms Law (page 21)
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ConclusionConclusion
NicoNico
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Practical applications Practical applications of Ohm’s Lawof Ohm’s Law
• Measure resistance of kettle element and calculate power rating– Does it work for a light bulb?
• Calculate volt-drop in a conductor
• -
• -
• -
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Your evaluation of this activity Your evaluation of this activity
• Documentation– does it meet educational requirements– does it give and allow for practical applications– can it be used by teachers
• clear and understandable guidelines• Usable handout for students
• Materials– affordable– robust
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Thank Thank youyou
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Critical OutcomesCritical Outcomes As a result of the activities, all learners should develop and
demonstrate the ability to; identify and solve problems and make decisions using critical and
creative thinking;• work effectively with others as members of a team, group,
organisation and community;• organise and manage themselves and their activities responsibly and
effectively;• collect, analyse, organise and critically evaluate information;• communicate effectively using visual, symbolic and/or language skills
in various modes;• use science and technology effectively and critically showing
responsibility towards the environment and the health of others; and• demonstrate an understanding of the world as a set of related systems
by recognising that problem solving contexts do not exist in isolation.
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The Developmental Outcomes The Developmental Outcomes require learners to be able to:require learners to be able to:
reflect on and explore a variety of strategies to learn more effectively;
• participate as responsible citizens in the life of local, national and global communities;
• be culturally and aesthetically sensitive across a range of social contexts;
• explore education and career opportunities; and• develop entrepreneurial opportunities.
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Learning OutcomesLearning Outcomes • LO1: Technology, Society and the Environment - The
learner is able to demonstrate an awareness and understanding of the interrelationship between Technology, society and the environment.
• LO2: Technological Process - The learner is able to understand and apply the Technological process.
• LO3: Knowledge and Understanding - The learner is able to demonstrate an understanding of the concepts and principles related to Electrical Technology.
• LO4: Application of Knowledge - The learner is able to apply principles and practices related to Electrical Technology.
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Link with LOs and ASs of Link with LOs and ASs of Electrical Technology Grade 10Electrical Technology Grade 10As a result of the Get connected with Ohm’s Law activity, all learners should develop and demonstrate the ability to;present assignments by means of a variety of communication media. (10.2.5)•describe the use and care of tools and measuring instruments (10.3.2)•describe the principles of electricity (10.3.4)•identify and describe the characteristics of electronic components (10.3.6
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Continuity tester
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Continuity tester
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Figure .2.2
Value
Colour
1st Significant Figure
2nd Significant Figure
Multiplier
Tolerance
0 Black 0
1 Brown 1 1 10 1%
2 Red 2 2 100 2%
3 Orange
3 3 1000
4 Yellow 4 4 10000
5 Green 5 5 100 000
6 Blue 6 6 1000 000
7 Violet 7 7 10 000 000
8 Grey 8 8 100 000 000
9 White 9 9 1000000000
Silver 10%
Gold 5%
The resistor colour- code chart
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Materials
IEEE Option Local Supplier
6,3 volt Lamp 150 mA 6,3 Volts 300 mA
Resistor No.1 = 47 ohms Resistor No.1 = 22 ohms
Resistor No.1 = 100 ohms Resistor No.1 = 39 ohms
Resistor No.1 = 100 ohms Resistor No.1 = 47 ohms
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Continuity tester