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You will need Acrobat
Reader installed to open the activity sheets.
You will also need the latest version of the flash player to be able to play swf files.
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· that changes occur when some materials are mixed
Children will demonstrate this by completing the task on page 3 successfully.
· that changes occur when some materials are heated
Children will demonstrate this by completing the task on page 3 successfully.
· that some changes are irreversible
Children will demonstrate this by completing the task on page 3 successfully.
· to use scientific concepts to explain how things work
Children will demonstrate this by completing the task on page 4 successfully.
· the importance to the environment of reducing, reusing and recycling waste
Children will demonstrate this by completing the task on page 4 successfully.
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Science:
QCA Unit 6D: Reversible and irreversible changes
· that some changes that occur when materials are mixed cannot easily be reversed
· that heating some materials can cause them to change
· that burning materials results in the formation of new materials and this is not usually reversible
Scientific enquiry
· to consider how scientists have combined evidence from observation with creative thinking to suggest new ideas
· to decide how to turn ideas into a form that can be tested
· to suggest and evaluate explanations for predictions using scientific knowledge.
· to make careful observations, record these and explain what happened using scientific knowledge and understanding
Literacy
· Persuasive writing
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Introducing the activity
· Display Page 1 of the activity through a data projector or on an OHT. Display Page 1 through a projector or as an OHT. Discuss the image with the children. Do spies really look like this or more like James Bond in the Bond films or Alex Rider in Stormbreaker the film based on books by Anthony Horowitz?
Leading the main activity
· Display Page 2 through a data projector or on an OHT. Explain to the children that Xerox is a company that have invented this special paper with help from scientists at a university in California (US) primarily to cut down on paper waste as it can be used up to 100 times. Emphasise that this is a reversible change - the paper can be reused.
· Display Page 3 through a data projector or on an OHT. Print pages out for the children. This page tells the true story of Courtney de Rysbach who was a German spy based in Britain during the First World War. He sent messages back to Germany written in invisible ink on sheet music.
- Encourage the children to discuss, with a partner, how they might use some of the materials suggested.
- After five minutes draw the class together. Ask each couple what ideas they have come up with. Write a list of ideas on the whiteboard. Mark against each idea how many times it is suggested. Ask the children to discuss which are the most popular methods and why. Have they tried or heard of any of them already?
- Ask each couple to choose one of their ideas and plan how to carry out an investigation to see if it will work. They must fill in the table on Page 3.
· Display Page 4 through a data projector or on an OHT. Read through the facts about rubbish. Encourage the children to discuss, with a partner, how they might use some of the materials suggested.
- Carry out a survey of the amount of paper thrown away in the classroom over the course of a day. How much is this in a week? A term and a whole year?
- Would this new paper help?
- Design a poster to encourage your school to use the 3Rs (recycle , reduce, reuse) http://www.recycle-more.co.uk/nav/page567.aspx is a useful website that has a litter survey that can be downloaded and also instructions for recycling your own paper
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Daily Mail
The original article about the Xerox paper.
MI5
MI5 website. Information about invisible ink and Courtney de Rysbach - the invisible ink spy.
Recycle-more
A useful website that has a litter survey that can be downloaded and also instructions for recycling your own paper.
Recycle Now
In the ‘fun stuff' kids can learn more about recycling with Recycler the rapping robot. There is also a section on types of paper and paper recycling.
Yellow Woods Challenge
A simple, educational and fun environmental campaign run by Yellow Pages and the Woodland Trust.
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Write
your online review to share your feedback and classroom tips with other teachers. How well does it work, how engaging is it, how did you use it, and how could it be improved?
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