Calculus (and calyculus)

For lots of years I have subscribed to A.Word.A.Day, founded by Anu Garg, and on 3 June 2013  -- offered in the category of "words that appear to be misspellings" -- the word that appeared in my email was calyculus (kuh-LIK-yuh-luhs), a noun designating a cup-shaped structure.  From this, of course, my thoughts turned to calculus and to poems on that subject.  Below I offer "UR-CALCULUS" by Jonathan Holden.  This Kansan poet has said that that his physicist father would write equations while sitting at the dining room table -- and "UR-CALCULUS" considers mathematics from a boy-riding-in-the-back-seat-of-a-car point of view.  

     UR-CALCULUS     by Jonathan Holden

               The child is the father of the man. 
                        -- W. W. Wordsworth

     Back then, "Calculus"
     was a scary college word,
     and yet we studied it
     from the back seat, we studied  
     the rates at which
     the roadside trees went striding