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it. Today we are going to do our review on tools and machines. As you know, we use tools

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and machines every day. We can use them at home or we can use them at work. We use tools

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machines to cut, lift, move or clean things. Look, on this side of the table I have some tools

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and on this other side of the table I have complex machines. What's the difference?

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I am going to tell you. Tools and simple machines are very simple. This means that they only have one or two parts and they need our energy to work.

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Look, these are pliers. Pliers need my energy to work. This is a screwdriver. A screwdriver needs my energy to twist a screw.

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A hammer, which has one and two parts, needs my energy to bang a nail.

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I use the scissors to cut paper and I can use a spoon to stir my coffee every morning.

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Complex machines are different. Complex machines have many parts and they need energy from means of electricity or from batteries to work.

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This remote control has some batteries inside.

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Look!

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Complex machines have many parts, like this computer.

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The computer has a keyboard, it's got a screen, it's got a camera, and it's got many other parts that are inside and we can't see.

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Now, do you want to come with me to learn more about tools and machines?

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Come, let's go! Follow me!

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This is a switch. Look!

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This is a socket.

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And this is a plug.

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We put the plug in the socket so complex machines can work.

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careful with some machines at home they can be dangerous for you be careful do

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not use don't use electric machines near water it's dangerous this is the end of

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the video I really hope you have enjoyed it see you bye bye