Firstly, teachers should diagnose the students' chemical pre-scientific conceptions.
该模式包括诊断前科学概念；
2
This kind of concept formed before students accepting of formal and scientific education is generally called pre-scientific concept or pre-concept.
这种在接受正规的科学教育之前所形成的概念一般称之为前科学概念（或前概念）。
3
The history of studying in brain function can be divided into three stages: pre-scientific period, classical brain theories and contemporary brain theories.