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-Observación. La computadora personal no trabaja correctamente: el monitor muestra mensajes de error.
-Pregunta de investigación: ¿que ocasiona el error en la computadora?
-Hipótesis 1. Unvirus invadió la computadora.
-Experimento.
▪ Encontrar un buen antivirus.
▪ Ejecutar el antivirus
-Predicción. Reinstalando el sistema operativo de la computadora, esta debe funcionar.-Respuesta: Usamos un buen antivirus y la computadora funcionó.

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