Finally, it is important to note that untraded interdependencies can not only facilitate effective collective learning and action but also impede it.

最后，值得一提的，非贸易相互依赖性虽然可以加强有效的集体 学习和行动，但同时也会造成阻碍。

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The objective of the action research was to promote the understanding of effective teaching and to enhance teachers?abilities of problem solving and students?learning ability.

然而，由于我国传统的数学教学对“双基”的过度重视，培养学生解决问题的能力曾一度只是纸上谈兵，没有落到实处。

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