"Mussel Watch" has been proven successful as a very applicable approach to monitorthe status and temporal changes in organochlorine pollutants using marine bivalve musselsas sentinel organisms, owing to their sessile lifestyle, wide distribution, high tolerance tocontaminants, and the convenience of sampling.

Sideline, as the starting point of shapes, is very valuable to paintings, and especially the intercourse of painting skill, style, observation method and shape in representationalism painting.

This paper focuses on two problems that teacher is worth paying attention to when guiding students to observe slice:one is the correct observation method,and another is training the science thinking habit.

This essay introduces the basic characteristics of qualitative research,including its natural property,inductive method adopted,open character and wholism concept;the results of qualitative research are presented in a text form;and its commonly used methods include observation,individual interview and focus group discussion.

Three important ones are discussed in this paper: observation, interview, archival records.

2,the concept and location confirmed using the observation and interview method,3,information integrated and analyzed by means of omuke and uppa,4,research results\'transformation and output by using scenario and persona.