Based on the activity theories, this essay builds up the strategies of the problem - solving activity teaching in Web - based environment.

本文以活动理论为基础，构建网络环境的问题解决活动教学策略。

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Formative assessment is an optional tool to ensure the implementation of web-based teaching and cultivation of learners 'autonomy in web-based learning environment.

形成性评估是确保网络教学实施和自学能力培养的有效手段。

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Formative assessment is an optional tool to ensure the implementation of web-based teaching and cultivation of learners 'autonomy in web-based learning environment.

形成性评估是确保网络教学实施和自学能力培养的有效手段。

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