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The topic for today is materials and to start we are going to talk about objects.

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Objects are made of different materials.

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Some of these materials are, for example, this that we have here.

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Let's go little by little.

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One material is metal.

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Some things that can be made of metal are, for example, a fork or a key.

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Another material is paper.

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Some examples of things that are made with paper are a book or a notebook.

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Another material is fabric.

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Our clothes are made of fabric, like, for example, a scarf or the gloves.

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The material is glass.

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Some things that are made of glass are, for example, a glass or a vase.

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And the last material is plastic.

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We can find plastic in bottles or in pens.

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All these materials are manufactured materials.

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These means that are made from other materials that we call natural materials.

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Some of these natural materials are wood, petroleum, cotton, wool, rocks or sand.

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For example, we use wood to make paper or we use sand to make glass.

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As well we use rocks to make metal, wool and cotton and petroleum as well to make fabric

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and we also use petroleum to make plastic.