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Hello, today we are going to teach your old invent. His name is 3 on 1.

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Have you ever stopped to think what would happen if you made a mistake with a pen or a pencil and you have no way to correct it? Have we have a solution?

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We identify this problem because people make a lot of mistakes with the pen, because we

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are people and the people make mistakes.

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The people that benefit this invention is the people that lost a lot of things like

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the tippets or the ruler.

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We need tippets, one rubber, and one sharper.

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This is our project in a sketch.

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It is very comfortable and very easy to carry in your pencil case.

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Thanks for watching.