Model the Human - Door example presented in lectures.
Think about given human door interaction example and improve it to be working.
Find out entities in system.
Find out interfaces of entities as a message sets for the input for the state machine in entity.
Think about interaction and behaviour of the system and model state machines in entities.
Give table and graph presentations of state machines.
Give a sequence diagram of the interaction of the entities in system, so that exchange of the messages in sequence diagram is consistent with state machines.