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

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Text this: Development of a Gamified Number Line App for Teaching Estimation and Number Sense in Grades 1 to 7