,-------.                                 
                                   |Pattern|                                 
                                   |-------|                                 
                                   `-------'                                 
                                       |                                     
                                       |                                     
,----------------------.  ,------------------------.   ,--------------------.
|Architectural patterns|  |Software Design patterns|   |Pedagogical patterns|
|----------------------|  |------------------------|   |--------------------|
`----------------------'  `------------------------'   `--------------------'