TeachScheme! 2000

  Recap:  (define-struct ...) and what it produces 

  Pragmatics: place (start w h) at end of buffer

  Assignments: 6.6.1, p72
               6.6.2
               6.6.4

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  Recap: design recipe for mixtures of structures (circles and rects)
            
  Recap: don't forget to reuse programs (i.e., solutions from above)

  Assignments: 7.4.1, p92
               7.4.2
               7.4.3
               7.4.4
               7.4.5