Approx. lesson plan:
To understand that a power source provides energy as a flow of electric current and needs a complete circuit to flow.
To know how to draw simple circuit diagrams.
• To identify the circuit components
• To create a circuit
• To explain why the lightbulb lights up
Identify electrical devices in diagram -Car Phone Toaster TV Cooker Hoover Light Washing machine CD player Kettle Iron Fridge
Nothing to write / introduce the topic / electrical circuits
Give time to write title and date
Verbally explain keywords while/if they write them down.
Pichu = electron ‘pretend this baby Pikachu is an electron’
PD = amount of kick behind each electron. More volts = more electrons flowing.
Electrons carry charge
Students must form a circle. One is nominated as the bulb.
Teacher is battery. Give ‘charge’ (a sweet) to every 6th pupil. When charge reaches the bulb it waves.
Charge = energy.
Can travel faster than electrons – can pass it to each other instead if they are just shuffling.
Circuit diagram drawings
Construct circuit + test + draw
Recap Symbols on drawings / practically create and test circuits.
Draw 2 more circuits
KS3 - Circuits 2
Has basic animated slides with examples of electron movement and principles of carrying charge.
Follows from KS3 - Circuits 1 and leads on to concept of resistance.
Ends with question about lightning (air has a high resistance, how does lightning 'flow'?)
Infomation:
Links to prior topics :
Basic physics, Circuits 1
Skills Developed:
Diagrams/graphical work, physical to abstract, logic
Learning Objectives :
Revise PD, electrons and charge
To identify new circuit components and understand conductors
To explain what is happening in a circuit, using different models
To infer a relationship between voltage current and resistance
Assessment Criteria for Objectives:
Comparison of models
Understanding of relationships between VIR
Teaching & Learning Strategies :
Visual and tactile,
labelling,
abstraction,
comparison modelling,
modelling with rope as circuit
Resources / Materials Required
School circuit kit (cells, cables, switches, bulbs)
Ammeters
Optional Rope Model
Lab Safety Considerations [CLEAPSS / Hazcards / COSHH]
Electrical safety (1.5-3v, IE negligible, but good time to start on electrical safety)
Practical Work/Demonstration
Circuit creation – Battery + bulb + ammeter to measure,
Optional rope model of a circuit
Literacy /Numeracy/ICT incl. School-wide objectives
Numeracy links with voltage calculations ,
literacy with the labels.
Other Broader/Cross-curricular links -
Household / hobby electronics,
DT links,
Scientific inquiry
KS3 - Resistance (follows Circuits 2)
Links to prior topics :
Basic physics,
Circuits 1,
Circuits 2,
PD/Current,
series,
parallel
Skills Developed:
Diagrams/graphical work,
physical to abstract,
logic,
problem solving.
Articulation,
relationships between values
Learning Objectives :
Revise PD, electrons and charge
To explain what effects resistance has on the current and PD in a circuit.
Using the concept of resistance to explain how a bulb can blow
Assessment Criteria for Objectives:
Comparison of models
Fill in analogous worksheet
Determine V=IR relationship from experiment
Teaching & Learning Strategies
Experimentation with circuits to practically determine the relationship of V=IxR
Resources / Materials Required
School circuit kit (cells, cables, switches, bulbs)
Ammeters, resistors (1kOhm & 10kOhm)
Lab Safety Considerations [CLEAPSS / Hazcards / COSHH]
Electrical safety (1.5-3v, IE negligible, but still worth pointing out)
Practical Work/Demonstration
Circuit creation – Battery + bulb + ammeter to measure, rope model of a circuit
Literacy /Numeracy/ICT incl. School-wide objectives
Numeracy links with voltage calculations,
literacy with the labels.
Other Broader/Cross-curricular links – [Citizenship, Sustainable Development, Scientific Inquiry, Critical Thinking, Articulation]
Household/hobby electronics,
DT links,
Scientific inquiry
Overview:
Adding lights/ recall series or parallel
Comparison of heating system (water) and electrical circuit
Radiator/water model
Compare resistance / radiators
Keywords
Main Activity
Construct circuit
Get results for current.
Change resistor
Deduce ohms law VIR. Use triangle handout for scaffolding
See if they can infer laws before showing slide.
End question about modelling circuits - extension
KS3- Ohms Law / Effects of Resistance
Main Topic : Ohms Law, Ohmic Heating & Current/Voltage Graphs
Skills Developed:
Physical to abstract reasoning,
logic/ problem solving.
Articulation, relationships between values
Reading Graphs
Learning Objectives :
To explain the relationship between VIR mathematically
To identify the relationships between current and P.D. on a graph
To explain the proportional relationship of I and V using Ohms Law
Teaching & Learning Strategies
Demo of I and R relationship with fixed Voltage using nichrome wire
Electrostatics:
**This introduces the topic, there is room for a practical demo with a Van DerGraff generator makes up the last 15 minutes of a 60 minute lesson**
Skills Developed:
Physical to abstract reasoning,
Observation
Links to prior topics :
PD/Current, series, parallel, circuits
Learning Objectives :
To explain the concept of charge transfer
To explain why we get shocks from things
To predict how a charged object will interact
Assessment Criteria for Objectives:
Statements to demonstrate LOs
Observations
Resources / Materials Required:
Van Der Graff generator, accessories, balloon,
Lab Safety Considerations [CLEAPSS / Hazcards / COSHH]:
High voltage (low current) shock risk
Practical Work/Demonstration:
Van Der Graff generator – generate static charge and discharge/use to demonstrate
Literacy /Numeracy/ICT incl. School-wide objectives:
Numeracy links with voltage calculations,
Literacy in expression and formulation of hypothesis.
Other Broader/Cross-curricular links:
Household electronics, DT links, Scientific inquiry.