The Resource - Gas & Electricity Energy for your Home · Energy Saving Trust ... Discuss the...
Transcript of The Resource - Gas & Electricity Energy for your Home · Energy Saving Trust ... Discuss the...
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e R
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Introduction
The Power Pack for 4-7 year olds has been designed by npower as part of its education
commitment. Developed in conjunction with a panel of practising teachers and the
Association for Science Education, it provides a stimulating, effective and comprehensive
resource enabling teachers to deliver the Science curriculum.
More specifically, the resource pack has been designed to support the delivery of teaching
and learning about Electricity within the Science and Environmental Studies curricula in
England, Scotland and Wales. It links to Personal, Social and Health Education & Citizenship
at Key Stage 1, Personal and Social Development for Primary 1-3 and children’s learning in
the Foundation Stage. The pack also offers many extension activities designed to meet other
learning objectives across the curriculum.
The pack also supports Education for Sustainable Development by encouraging pupils and
schools to think about the ways in which energy may be wasted and how to use energy
more efficiently. The pack provides a foundation for schools considering applying for the
Energy Saving Trust’s Energy Certification for Schools.
The resource covers five topics, which can be taught as individual activities, lessons or as a
class project. The topics can be rearranged to suit teaching needs and styles, for example,
practical work for ‘Batteries’ followed by ‘Electrical Safety’, etc. The primary aim of the pack
is to ensure pupils understand what electricity is, the role it plays in our daily lives and how
to use energy safely and efficiently. The five topic areas are:
Uses of Electricity
Electrical Safety
Batteries
Investigating Circuits and
Practical Applications
Energy Efficiency
Pow
er P
ack
1
2
Your Power Pack resource includes:
1 x teacher booklet containing classroom ideas for discussion and practical
activities for each topic.
2 x A2 colourful laminated posters for display in the classroom and
interaction during class discussions. The posters can be written on using a
wipeable marker.
1 x A3 safety awareness and energy efficiency poster with an energy
game on the reverse.
6 x photocopiable pupil worksheets each linked to a topic area, reading
cards for the energy game and a certificate on the reverse of the A2 posters.
Progression and Differentiation
The topics in this resource have been designed so they can be taught to children aged 4-7
years, with help from npower’s education friends Electra, Bright Spark and Watt the dog.
However, the needs and abilities of individual children may vary within classes and schools.
The five topics allow teachers to create individual lesson plans suiting the abilities of the class
and preferred teaching styles. There are suggestions for resources, starting points, productive
questions, opportunities to develop skills and knowledge, and additional activities to extend
children’s learning in Science and other curriculum areas. We hope these will provide you with
the materials and inspiration to deliver lessons and meet the intended learning objectives.
Energy Saving Trust
The Energy Certification for Schools promotes energy management and efficiency for the
whole school community - students, governors, staff and local authorities. It encourages
schools to make links between the school curriculum and the management of energy
efficiency. Schools can save themselves money on their energy bills, reduce their carbon
dioxide emissions (helping reduce the damaging effects of climate change) and improve the
working environment for students and staff alike.
Following the simple steps of the scheme will help the school to produce an action plan to
deliver a co-ordinated approach to energy management, bringing together the interests and
expertise of teachers, pupils, governors and parents.
Further information on Energy Certification for Schools is
available online: www.est.org.uk/schools/
Lesson
Pla
n
Teacher notes
Energy and power are very important parts of our lives and we use them every day, in their
many forms. Electricity is a form of energy and power. Electricity itself is invisible but you
can see the effect is has on other things because it makes them work and makes our lives
easier. Electrical energy can be transformed into light, sound, heat, movement and
magnetism.
Electra’s ‘Uses of Electricity’ classroom poster helps to explain the sources and uses of
electricity. Most of the electricity we use is generated in power stations by burning non-
renewable energy sources (fossil fuels). The power station burns the coal, oil or gas to turn
the water into steam. The steam turns the blades of a turbine which makes the magnet
inside the coil of wires (the generator) spin round and this produces electricity. The steam is
turned back into water inside the condenser. Electricity can also be generated from renewable
(sustainable) forms of energy. More information on energy sources can be found on page 13.
Electricity from the power stations is distributed at a high voltage (an electromotive force or
‘push’) along wires found above the ground on pylons and overhead line poles, and also
through cables found underground.
Before electricity reaches our homes, schools and offices the high voltage is decreased in a
substation to a lower voltage. Electricity is very useful but is extremely powerful and
dangerous, and can result in electric shocks and electrocutions if not treated with care.
Electrical appliances must be used carefully and children should be warned never to go near
to pylons or substations.
Resources
Poster 1 - Uses of Electricity, a candle & matches, water-based felt tip pens, magazines and
catalogues illustrating electrical appliances, scissors, child socket protectors.
Learning objectives
Science: Children…
use sources of information to answer questions.
know what electricity is and what electricity can do.
know about everyday appliances which use electricity.
Cross-curricular: Children…
know that electrical appliances can be harmful if not used properly (PSHE).
join in and interact in group discussions, making relevant contributions (English).
identify differences between ways of life at different times (History).
Topic
1 Use
s o
f Ele
ctr
icity
3
Starting point (whole class)
Darken the classroom or the discussion corner and light a candle.
Questions to ask:
What would life be like if we only had candles like the olden days?
What would we miss if there were no electric lights?
How many things in the classroom use electricity?
Is there anything else that works by electricity - at home or in the garden?
What do you think electricity is? (Accept a range of answers.)
Where do you think it comes from?
Development
Switch on the light or lighten the room. Introduce the poster.
Either as a whole class or in small groups, encourage the children to circle the items on Poster 1 which use electricity.
Discuss the sources of electricity in the poster and why electricity is so important to all the things we like to do. Draw
attention to all the classroom appliances that use electricity, including the central heating (gas-fired systems still need
electrical mechanisms such as a pump and a timer).
Draw attention to the sockets, plugs and cables making the connections to the appliances. Show a child socket protector
and reinforce safety reminders.
Distribute the catalogues for groups to cut out pictures of electrical appliances.
Plenary
Use Poster 1, magazines and catalogues for discussion. Using pictures make a display. Use other pictures for children to stick
into individual or group project books.
Extension activities
In a movement lesson, dramatise a classroom
with electrical devices using percussion to ‘switch
on radios, computers, lights, fans, etc.’
Children tell or write a story beginning either... ‘If
we had no electricity, I would miss...’ or ‘Long ago
my great grandad and granny had no electricity
so they had to...‘
Older children draw a picture of their house and
write or draw electrical items in each room. Can
they show how many sockets and lights are in
each room? Encourage children to include
electrical items used outside in the garden.
Older children could keep an electricity diary:
a) drawing one electrical item they have seen
used each day, or b) listing all the electrical items
they have seen used each day.
Teacher notes for Worksheet 1
Learning objectives: Children...
ask questions about how things work.
look at similarities and differences.
identify simple patterns or associations.
know that everyday appliances use electricity.
Teaching approach:
Read through Worksheet 1 with the children. ‘Work’ is an
important scientific concept.
Encourage children to use this word and accept their words
representing forces, such as push, pedal, kick or shake as well as
energy or power.
Alternative electrical items could include computer, microwave
oven, battery-operated toys, digital camera, etc.
Health & Safety:
Remind children that mains electricity is
potentially dangerous and how to
behave safely.
4
Lesson
Pla
n
Teacher notes
Electricity can be extremely dangerous if not used correctly. Electra’s Electrical Safety and
Energy Efficiency poster has been designed for display in the classroom to highlight some of
the most important electrical safety messages for a home.
Everybody needs to be safe when using items that require electricity; otherwise a person
may get an electric shock. If the electric shock is fatal, the person is said to have been
electrocuted.
Voltage is used to measure electrical strength. The higher the voltage the higher the
potential danger. Mains supply is 240v – although a low voltage, it is still dangerous if not
used with care. The electricity distributed from the power stations is ‘high voltage’
electricity (up to 400,000 volts). The voltage is then reduced by a transformer in a number
of substations. ‘Mains’ electricity is safe when properly installed and insulated by a qualified
electrician. Unqualified people should never experiment with electricity or try to ‘fix’ broken
electrical appliances.
Batteries are a much lower voltage source. Most domestic batteries are between 1.5v and
12v. If they are handled correctly they are safe to use in school experiments. When using a
good primary school electrical kit, the maximum voltage necessary for successful
investigations is 4.5v - 6v (e.g. 3 x 1.5v batteries). This gives the opportunity in class to
discuss the magnitude and therefore danger of mains electricity compared with the low
voltage needed to make kit bulbs light up, buzzers buzz and motors spin.
Resources
Poster 2 - Electrical Safety and Energy Efficiency, photocopies of Electra’s safety rules from
Poster 3 for each individual child. Sheets of A3 paper, pencils, erasers, water-based felt tip
pens, crayons, Electra and Bright Spark’s energy game.
Learning objectives
Science: Children…
look closely and notice differences.
think about what might happen if risks are not controlled.
know that everyday appliances use electricity.
Cross-curricular: Children…
know rules for, and ways of keeping safe (PSHE).
organise and lay out written work for presentation purposes (English).
design and make a product to inform others (D&T).
Topic
2 E
lectr
ica
l Sa
fety
5
Starting point (whole class or in groups)
Pin up Poster 2. Invite children to look closely at the poster.
Questions to ask:
Do you notice any differences between the two pictures?
Which house is safer?
What makes you think that?
What would you like to say to the Silly family to help them be safe?
Development
Use a water-based felt tip pen to circle the differences.
Write down all the suggestions that the children offer to help the Silly family to behave more safely.
Discuss ways of editing the messages to make them clear and short... e.g. ‘always keep electric wires tidy, always dry your
hands’, ‘keep water away from electricity’.
Assign one message to each group of children.
Each group uses an A3 sheet to design and make a safety poster illustrating their safety message.
Younger children would need adult support in writing the message.
Plenary
Share and discuss the different safety posters, a) in the classroom, b) in an assembly.
Health & Safety:
Remind children that they shouldn’t
touch loose cables, broken plugs or
appliances that get hot etc. and always
ask grown-ups for help.
6
Extension activities
Give each child a copy of Electra’s safety rules page.
Children could decorate the border to reinforce the rules.
If possible mount onto cardboard.
Children take Electra’s safety rules home to show and discuss the message and their work on electricity with their families.
Ask a few children to decorate additional copies for the classroom and school corridor.
Electra and Bright Spark’s energy game
This fun game will reinforce the safety and energy efficiency messages learnt in lessons. The game can be played by two or
more children. To play the game simply throw the dice and move to the relevant square. Action squares are accompanied by
reading cards which can be read by children and adults. The winner is the first person to reach the finish line.
They will need:
A3 photocopies of the game mounted onto cardboard
A3 photocopies of the reading cards mounted onto cardboard
Counters
Dice
Lesson
Pla
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Teacher notes
Batteries provide energy for many appliances and devices used in everyday life. They
produce electricity which makes devices such as light bulbs and motors work.
Batteries are cheap, efficient and provide a safe method of power. Batteries come in all
shapes and sizes from a small watch battery to large car batteries (e.g. 12v). The weight of
batteries restricts their usage. For instance, milk floats are an example of a large battery used
for transport. The strength of a battery is measured in volts. AA batteries are commonly used
batteries and have 1.5 volts of power. The scientific term for a battery is a cell.
A battery contains a mixture of chemicals which react together to produce ‘surplus’
electrons at one terminal of the battery (the negative terminal) and a shortage of electrons
at the other (the positive terminal). When the battery is connected and completes a circuit,
the negative charge at one terminal repels the free electrons in the wire, and the positive
charge at the other terminal attracts them. This sets up an electrical field in which the free
electrons in the wire begin to move. The flow is, in fact, very slow but the ‘message’ travels
through the wire apparently instantaneously, making a bulb or other device work as soon as
the battery is connected.
Batteries have a positive and a negative terminal and in commonly used AA batteries these
are at either end. Batteries must be inserted correctly according to the instructions to
complete the circuit and ensure the circuit flows.
Resources
Poster 1 - Uses of Electricity, a variety of batteries of different voltage from 1.5 - 6v, 1 large
torch and/or 5-6 torches, battery-operated toy, battery-sounding book (e.g. the books
about ‘Spot’ by Eric Hill, or ‘The Very Lonely Firefly’ by Eric Carle), paper, pencils, crayons,
water-based felt tip pens.
Learning objectives
Science: Children…
explore and investigate objects, identifying some of the features.
ask questions about why things happen.
give reasons and simple explanations for how things work.
know that everyday appliances use electricity.
know that batteries need to be installed correctly to create a circuit and work safely (H&S).
Cross-curricular: Children…
know rules for, and ways of keeping safe (PSHE).
understand the magnitude of a sequence of numbers (Maths).
assemble components to make something work (D&T).
draw objects they have observed from life (Art).
Topic
3 B
atte
rie
s
7
Starting point (whole class)
Show and pass around an empty torch and empty battery-operated toy.
Disassemble the torch and toy for children to see inside. Invite children to
name/label the features of the torch (bulb, casing, switch, battery, etc).
Install the batteries correctly, reminding children of the safety issues.
Questions to ask:
Why do you think the torch/toy won’t work?
How do you think batteries make them work?
What is electricity? (Accept a range of explanations - lead children to
the term ‘energy’.)
What happens to us when we don’t have any energy?
Why do you think it’s important that we ALWAYS put the batteries in
the right way round?
Development (in small groups or 1 group at a time)
Each group explores a torch, disassembling and assembling the parts, installing the batteries to make it work.
Children draw the torch with its battery, labelling the features (with help if required).
Plenary
Show and display the labelled drawings. Look at the other batteries on display and invite children to suggest uses for the
different batteries.
Extension activities
Refer to Poster 1 and ask children to identify which
electrical appliances work by using batteries.
Older children draw a selection of the different
batteries in sequence of their voltage or ‘push’ force
showing their AA symbols. (Explain the decimal point in
1.5v.) Ring the most powerful.
Make a collection of different objects that use batteries
for a classroom display: torches, toys, books, a watch, etc.
Borrow a hearing aid or invite a member of the Royal
National Institute of the Deaf (RNID) to come and
demonstrate the use of the hearing aid and why very
small batteries are so valuable. Electricity is important
in every aspect of our daily lives.
Teacher notes for Worksheet 2
Learning objectives
Children...
know about appliances that use electricity.
know about simple circuits involving batteries.
give reasons why things work.
communicate ideas in writing.
Approach
Read through Worksheet 2 with the children. Some
children may need support when writing their
explanations.
Health & Safety:
Batteries that are incorrectly installed can
get hot and be unsafe. The chemicals
inside batteries are dangerous and
children should be reminded never to
mess with them, cut them open, throw
them into fires or heat them up by leaving
them in warm places. Button batteries can
be shown to children but should not be
used for classroom exploration.
NB. It is not necessary or desirable to use
batteries of greater total voltage than 6
volts with primary children.
8
Lesson
Pla
n
Teacher notes
Electricity comes in two forms: current electricity that flows and static electricity which
doesn’t flow. Static electricity is an interesting phenomenon but a difficult concept for
4-7 year old children to grasp. ‘Flowing’ electricity is more understandable. Electrons
flow from the source through the wire (a conductor) to give an electric current. The flow of
electricity is measured in amperes (A).
Electric currents need a continuous loop of conductive material (usually metal) to flow
around. This is called a circuit. A simple circuit consists of a battery, a wire, bulb and another
wire linking back to the battery. When the circuit is complete the bulb will light up. If this
loop is broken, for instance, if the wire is not properly attached to the bulb or the bulb is
unscrewed, the electricity can no longer flow and the bulb will not light up. This acts as an
accidental ‘switch’.
Designed switches operate by having optional connections or contacts to open or close and
complete circuits. When the gap is closed the electricity flow is continuous and when open
the flow is cut and the bulb does not light. Toggle or pressure pad switches in a good
electricity kit enable children to see the mechanism at work. Simple classroom switches can
be made from card, kitchen foil and/or paper clips.
NB. A good commercial electricity kit is essential (see ASE website for recommended
suppliers: scienceonestop.com and ase.org.uk). 4-7 year old children need access to
equipment that is easy to handle and gives children success in achieving the learning
objectives. Wires terminating in banana clips are easier to handle than crocodile clips,
although these have their uses. Battery packs encourage children to install batteries
correctly and mounted devices and switches are easier to connect effectively into circuits.
Resources
A suitable electricity kit, card, kitchen foil (usually aluminium, not ‘tin’ foil), stapler or gluesticks.
Learning objectives
Science: Children…
explore and investigate objects and events.
ask questions about why things happen and how things work.
make predictions about what might happen.
know about simple series circuits involving batteries, bulbs and other devices.
know how a switch can be used to break a circuit.
Cross-curricular: Children…
follow simple instructions to control the risks to themselves and others (PSHE).
describe events and experiences, using new vocabulary purposefully (Eng).
design and make a product for a purpose, using materials & components (D&T).
Topic
4 In
vestig
atin
g C
ircu
its a
nd
Pra
ctic
al A
pp
licatio
ns
9
Fig 1. International symbols
battery or cell 3 cells/batteries light (source) switch motor buzzer
Starting point (whole class)
Switch a light on, then off. Ask children to describe what is happening, where
they think the electricity is coming from, how they think the switch works.
Questions to ask:
How do you think we can make the light bulb work?
What do you think will happen if the wires are not connected properly?
What does the electricity need for it to flow through?
How do you think the switch works?
Development
Set out items from the electricity kit for each group: battery pack with
batteries installed, wires, mounted bulb, mounted switch. Encourage the
children to predict, then explore the items to make the light bulb work. (Young
children often leave out the batteries initially and simply connect the bulb to
the switch. Let them test this, then guide them to include the batteries.)
Unscrew the lid of the switch and show children the mechanism - opening
and closing/completing the circuit.
Depending on time and availability of equipment:
a) repeat with another group OR b) make a gap in the circuit. Give
children pieces of kitchen foil to complete the circuit. Make DIY switches
(Fig. 2) by stapling (or sticking) two pieces of kitchen foil (folded for
strength) at either end of a piece of card so that they can overlap or lift up.
Alternatively use a paper clip at one end so that it can swivel and connect
or move off the foil. Connect the DIY switch into the circuit, joining by
touching only or using crocodile clips attached to the banana clip ends.
Plenary
Children describe what they needed to do to make the light bulb work (a complete circuit) and how a switch works. Recap new
vocabulary such as circuit, switch, complete, gap, energy, connections, and reinforce the Health and Safety message regarding
exploring electricity with low voltage batteries and the dangers of mains electricity.
Health & Safety:
Disassemble the battery pack. Point out
the low voltage numbers on the sides of
the batteries - this is very small and safe.
The voltage of mains electricity is much
larger and therefore dangerous and not
to be touched.
Demonstrate how the batteries must
always be installed correctly.
10
Extension activities
Allow children more time to explore the kit to make additional
bulbs and other devices/components work. Note that several
devices in the same ‘series’ circuit will dim or stop devices
working. It is enough for young children to know that this is not
effective. You may wish to reconnect the devices in separate
‘parallel’ circuits to show that they work more effectively like that.
Use the kit to light up a shoe-box doll’s house or animal barn or
Santa’s grotto, etc. Show in an assembly.
Older children: Design and make a trap to entice a dinosaur or
capture a burglar, using the children’s DIY kitchen foil switches.
When a heavy object (large toy or modelling clay) steps on the
switch, the circuit is completed and a light or buzzer goes on.
Introduce and use Worksheets 3, 4, and 5.
Teacher notes for Worksheet 3
Learning objectives: Children...
make predictions about what might happen and offer
explanations (hypotheses).
know about simple series circuits involving batteries,
bulbs and other components.
know how a switch can be used to break a circuit.
assemble ideas in speech and in writing.
Teaching approach:
Read through Worksheet 3, explaining unfamiliar
vocabulary. Encourage children to say why things do
not work. Children draw and write about a circuit,
with writing support where needed.
Fig 2. DIY switches
Teacher notes for Worksheet 4
(older children)
Learning objectives: Children...
interpret signs and symbols.
design symbols to represent objects.
know that a complete circuit is needed to make an
electrical device work.
describe ideas to others, listening to their ideas.
Teaching approach:
Discuss the meanings of the signs and symbols. Explain
the ‘representation’ of real objects or commands. Invite
children to design signs for the electrical equipment.
Share their ideas, giving positive feedback.
Introduce the international symbols for the same items
(Fig. 1).
Invite discussion as to why there needs to be international
agreement on electrical signs and symbols.
Teacher notes for Worksheet 5
Learning objectives: Children...
explore and investigate objects and events.
ask questions about why things happen and how
things work.
make predictions about what might happen.
know about simple series circuits involving batteries
and bulbs.
know that materials have different characteristics.
Teaching approach:
Discuss the materials shown on the worksheet and the
new vocabulary ‘conduct’ and ‘insulate’. Provide
opportunities for children to test other simple and safe
materials in the classroom for conductivity. Display the
materials in Venn hoops with labels.
NB. Where the voltage is high most materials will
conduct electricity.
Lesson
Pla
n (C
ont.)
11
Choice cards
Dimmer switch (older and gifted children)
Lighthouse
Wobbly hand detector
Teacher notes
Electrical circuits can make all sorts of things happen. In this topic we aim to encourage
children to think about what they have learnt and how they can apply this knowledge to make
useful everyday circuits such as a choice card, a dimmer switch, a lighthouse, and a wobbly
hand detector. Invite the children to think of other things they can design and make using the
electricity kit.
Choice cards
Resources
Electricity kit
Pieces of card approx. 20x12 cm (for each child or
group)
Strips of folded kitchen foil
Hole punch
Sticky tape
Pencils and crayons/felt tip pens
Instructions
Choose a relevant theme for the choice cards (shapes
and words, pictures and new vocabulary/spellings,
questions and answers, numbers). Punch 5 holes
down each side of the card. Draw/write the pictures
and text but not adjacent to each other. Underneath
the card, stick the first folded piece of kitchen foil
such that the foil is exposed underneath the correct
hole punch positions. Use sticky tape to insulate the
foil completely. Repeat with each item, insulating
each strip of foil from the others. Test with a circuit
involving a bulb or buzzer, by touching (banana clips)
the foil through the punched holes.
Ask: Why do you think we have to insulate each
foil strip?
Display and encourage parents to test them too.
Wobbly hand detector
Resources
Electricity kit
Pieces of balsa or other soft wood (approx. 30 cm)
Length of stiff bare wire (50-75 cm)
Loop of wire (wider for younger children)
Instructions
Set up a circuit with a bulb or buzzer, leaving two
independent leads. Bend the bare wire into a
multi-curved test shape. Push one end firmly into
the soft wood.
Attach the small loop of wire to one of the circuit
leads with tape or a crocodile clip. Loop over the
curved shape before embedding the second end of
the test wire end firmly into the wood. Fasten the
other circuit lead to the other end of the curved
shape using a crocodile clip. Test hand control by
looping the loop over the curved shape.
Ask: Why do you think the light goes on when we
touch the bare wire?
Display and invite parents to play at collecting
time or on parents’ evenings.
Lighthouse
Resources
Electricity kit
Large plastic washing-up bottle or empty biscuit
packet
Skewer
Scissors
Modelling clay
Sticky tape
Bottom half of transparent plastic drinking bottle
(optional)
Instructions
Make the top of the container flat. Put modelling
clay in the bottom for extra stability. Make two
holes at the top and two holes at the bottom of
the container. Thread leads through from the
bottom (attached to the battery pack and switch)
to the top. Fasten the mounted bulb on the top
and insert the leads into the connections to
complete the circuit and light the bulb. If required,
stick the transparent cover over the light bulb.
Ask: What do you think happened to sailors before
there were lighthouses?
Older children could design a system of
recognition flashes for each lighthouse.
Dimmer switch (older and gifted children)
Resources
Electricity kit
Empty kitchen roll tube or length of poster tube
1 -2m bare flexible wire
Sticky tape
Scissors
Instructions
Make a complete circuit leaving two disconnected
leads. Cut small slits at each end of the cardboard
tube. Fix one end of the bare wire into a slit and
coil the wire tightly around the tube. Fix the end
into the other slit. Fasten the coil of wire down
with a length of sticky tape. Attach a crocodile clip
to one of the banana clips and fix it to one end of
the bare wire. Test in a circuit with bulb or buzzer
by making the other connection at different points
along the coil.
Ask: Why do you think a long wire makes the light
go dim? (Greater resistance).
Discuss situations in our lives where dimmer
switches can be useful.
12
Topic
4 In
ve
stig
atin
g C
ircu
its a
nd
Pra
ctic
al A
pp
lica
tion
s
Lesson
Pla
n
Teacher notes
Every day the Earth’s population uses a large amount of electricity doing things we take for
granted such as turning on lights and boiling the kettle.
About two thirds of the electricity in Britain is generated by power stations burning fossil
fuels (non-renewable energy sources) such as coal, oil and gas to release stored chemical energy
which formed as a result of photosynthesis millions of years ago. Photosynthesis stores carbon in
plant cells which is then consumed and stored by animals in their cells. Fossil fuels are a limited
resource and could potentially run out. When burnt, they release emissions such as carbon
dioxide into the atmosphere which can contribute to climate change. The emissions from cars,
aeroplanes and some heavy industries are also contributing to the effects of climate change.
The demand for electricity in large quantities is unlikely to fall, so we must move towards more
sustainable ways of energy generation that will not pollute our environment. The UK Government
is working towards a target of providing 10% of UK electricity supplies from renewable sources by
2010 and 15% by 2015 with an aspiration of 20% by 2020.
Scientists and power companies such as npower are investigating renewable sources such as
solar, hydro, wind and biomass because these will not run out and they are also less damaging
to the Earth’s atmosphere.
By being more energy efficient we can reduce our daily usage of electricity and energy and
this in turn will help reduce the impact it has on our environment and save money on bills.
There are many ways to improve our energy efficiency and some simple steps could make a
huge difference. Homes and schools can be made more energy efficient by insulating walls,
roofs and floors, using double glazing, ensuring that the building is draught proof, installing low
energy lighting and energy efficient boilers and by installing zone heating.
(For additional information on renewable energy and energy efficiency measures, contact the
npower Energy Efficiency Helpline on: 0800 02 22 20 and we will be happy to help. For more
information on the Energy Certification for Schools please refer to: Page 2.)
Resources
Poster 2 - Electrical Safety and Energy Efficiency, paper, pencils and crayons, worksheets, an
energy-saving light bulb and an ordinary light bulb, percussion instruments.
Learning objectives
Science: Children…
predict what might happen in certain situations.
know that everyday appliances use electricity.
know that switches are used to break electrical circuits.
Cross-curricular: Children…
know some of the ways in which we can help to improve the environment (PSHE).
listen to and respond to a story (English).
participate in drama activity, using actions to convey a situation and its consequences
(English).
use instruments to create and illustrate ideas (Music) or design and make a product to
convey information (D&T).
Topic
5 E
ne
rgy
Effic
ien
cy
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Starting point (whole class)
Introduce the concept of saving energy with a children’s story plus
chorus as shown.
With younger children, retell the story so that they can join in the
chorus again.
With older children, the story can be extended to include: washing small
wash loads in the washing machine, tumble drying on a dry day, leaving
the central heating on, etc.
Questions to ask:
What do you think the Silly family will need to remember?
Why do you think we need to save electricity?
Where do you think electricity comes from? And before that? (Young
children are likely to state ‘from the plug’, etc. Accept a range of
responses).
Do you know where we might get our electricity from when coal, oil and
gas run out? Explain that the sun (solar power), the wind and water
(hydro and wave power) will never run out.
Development
Children in groups design and make posters showing inefficient
behaviour from the story with big red crosses and the message:
SAVE IT! DON’T WASTE IT!
Plenary
Show the poster again and discuss all the different ways where the Silly family are wasting energy in their house and Electra
is being ‘efficient’ - defining the word as saving, not wasting.
Extension activities
Dramatise the story with percussion
instruments. Children are appliances
which play when switched on.
In the Silly’s house, the appliances are
left on to make a general noise,
gradually getting quieter and quieter
until they stop and can’t play anymore.
In Electra’s house, the appliances are
switched on and switched off again.
Children could play Electra and Bright
Spark’s energy game to reinforce the
energy efficiency message. Refer to
page 6 for further details.
Teacher notes for Worksheet 6
Learning objectives: Children...
collect and interpret data using simple graphs to sort and classify
information (Maths).
know some of the ways in which we can help to improve the environment
(PSHE).
Teaching approach:
Show and compare the energy-saving light bulb with the ordinary light bulb.
Explain that energy-saving bulbs use less electricity and last much longer
than ordinary ones.
Read through the text of the simple survey and explain any unfamiliar
vocabulary, pointing out the parents’ information tear-off strip. Use the data
from the returned worksheet surveys to create and interpret the data in a
pictogram or bar chart, showing the ways families are making positive
decisions to save energy.
For further reinforcement, teachers can carry out another simple survey on
ways families can save on energy and materials and improve the environment.
Sample story:
Once upon a time, there were two families
living side by side.... Electra’s and the Silly’s.
One day, Dilly and Philly Silly woke up and
went to the kitchen for breakfast. They put
the light on but they left the light on when
they went out!
CHORUS: And it wasted lots of electricity!
After breakfast they watched TV for a bit. But
they left the TV on when they left the room!
CHORUS: And it wasted lots of electricity!
They left the window open with the heating on!
CHORUS: And it wasted lots of electricity!
Then they worked on the computer for a bit
before going to school. But they left the
computer on standby when they went to school!
CHORUS: And it wasted lots of electricity!
When the Silly’s came home from school, can
you guess what had happened? They’d wasted
too much electricity! So they went next door
to Electra’s house to ask for her help. Electra
let them watch her TV and work on her
computer. And Electra said, “You have to
SAVE it - don’t WASTE it!” So they did.
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