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__    __    _____     ______    _____     _____   
\ \\ / //  |  ___||  /_   _//  |  ___||  /  ___|| 
 \ \/ //   | ||__      | ||    | ||__   | // __   
  \  //    | ||__     _| ||    | ||__   | \\_\ || 
   \//     |_____||  /__//     |_____||  \____//  
    `      `-----`   `--`      `-----`    `---`

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發送短信 : Design of a Mobile App to Promote Understanding and Fluency in Finding the Equation of a Line