Method. In Study 1, children were asked to solve both easy and difficult two-step change problems in three different versions: standard, situational and conceptual rewording.

方法：在研究1中，要求孩子们在三种不同的版本下(标准、情境重述、概念重述)解答简单和困难的两步变化应用题。

youdao

Method. In Study 1, children were asked to solve both easy and difficult two-step change problems in three different versions: standard, situational and conceptual rewording.

方法：在研究1中，要求孩子们在三种不同的版本下(标准、情境重述、概念重述)解答简单和困难的两步变化应用题。

youdao