principle of clarity meaning in English

明晰清楚原则
直观原则

( 2 ) instructional design of mathematical problem solving should be built on psychology theory , learning theory , teaching theory and consider the principle of clarity , matheaiality , enlightenty , expansibility and integrity of the design . ( 3 ) instructional design of mathematical problem solving consists of four closely related steps : to set up and to present teaching objectives , to analyze learning tasks , to design instructional strategy and instructional media and to evaluate learning outcomes
( 2 )数学问题解决的教学设计应以心理学理论、学习理论、教学理论为基础，遵循明确性、具体性、启发性、发展性、整体性原则。 ( 3 )数学问题解决的教学设计由紧密联系的四个环节组成：设置与陈述教学目标；分析学习任务；设计教学策略与教学媒体；评价学习结果。