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 _    _      ___      ____     _    _             
| |  | ||   / _ \\   |  _ \\  | || | ||   ____    
| |/\| ||  / //\ \\  | |_| || | || | ||  |    \\  
|  /\  || |  ___  || | .  //  | \\_/ ||  | [] ||  
|_// \_|| |_||  |_|| |_|\_\\   \____//   |  __//  
`-`   `-` `-`   `-`  `-` --`    `---`    |_|`-`   
                                         `-`

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Text this: Modeling student task persistence in a learning-by-teaching environment