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

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Text this: Using dynamic tools to develop an understanding of the fundamental ideas of calculus