观察法和专题讨论法适用于探索性调研，问卷调查法适用于描述性调研，而实验法适用于因果性调研。
While observation and focus groups are best suited for exploratory research, surveys are best suited for descriptive research and experiment for causal research.
以笔者设计的“合作拉球”实验为主，结合观察法、访谈法和文献法综合分析幼儿合作学习的特点。
The researcher mainly design "drawing ball-cooperation" experiments, and analysis characteristics of cooperative learning of children with observation, documents and interviews.
采用文献资料法、实验法、观察法、数理统计法来了解自编有氧健身操对中老年女性健身作用的影响及推广价值。
This paper aims to prove the impact of Aerobics on the middle and aged women, based on document, experiment, observation and data analysis.
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