Exploring Everyday Materials · Even though these materials have been changed a little, a wooden...

Today we will be...Identifying materials that are natural and materials that are man-made.

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Exploring Everyday Materials

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Which of these materials do you think is the odd one out and why?

stone

wood

chalk

plasticwool silk



The odd one out was plastic! Did you guess correctly?

All these objects are made from natural materials.

Wood, stone, chalk, wool and silk are all found in

nature.

Plastic is a man-made material. You do not find plastic in nature.



Natural materials, such as wool, wood and stone, can be used to make objects. Sometimes changes have to be made to the materials to make them useful but the material stays

the same. Wood and stone can be carved and polished to

make into useful objects.

Wool, cotton and silk can be spun into thread, dyed

and then woven into fabric.



Even though these materials have been changed a little, a wooden toy is still made of wood and a cotton T-shirt is still made from cotton. This means the objects are still

made from natural materials.

However, sometimes a material can be changed to make a new material. We call these materials man-made materials. Plastic, for example, is made from oil through a special process. Once the oil has

been changed into plastic, the material is no longer natural as it

has been altered.



Other man-made materials include paper and glass. Paper is made from wood. The bark is removed from the wood and the wood is then turned into pulp by machines. The

pulp is then turned into paper.

Glass is made from sand. The sand is heated until it is molten. Chemicals are added and then the

liquid sand can be poured or moulded into the shape it needs to be

for the purpose.



Other examples of natural materials

Other examples of man-made materials

• Metals (such as gold, silver, copper, tin, iron)

•Clay•Oil

•Crystals

•Rubber

•Coal•Precious stones (such as diamonds and rubies)

•Polystyrene

•Nylon

•Cement

•Tarmac•Teflon

•Clingfilm

•Acrylic



Which of these objects are made from natural materials and which are made from man-made materials? Can you

explain why?

cotton paper glass

clay pot gold rings

polystyrene cup

paper clipchair


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Did you guess right?

cotton is a natural material paper is a

man-made material

polystyrene is a man-made material

glass is a man-made

material

metal is a natural material

clay is a natural material

gold is a natural materialwood is a

natural material

PLENARY



Plenary How are these rulers that are made from man-made and natural materials different?

Would you use them differently?


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How are these chairs that are made from man-made and natural materials different?

Would you use them differently?

Exploring Everyday Materials · Even though these materials have been changed a little, a wooden...

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