It is one of the most important goals to train students 'mental arithmetic ability in primary school, so teachers attach great importance to how to improve the level of mental arithmetic teaching.

小学生心算能力的训练和培养是小学数学教学的重要任务之一，怎样提高心算教学质量，是老师非常关心的问题。

youdao

It is one of the most important goals to train students 'mental arithmetic ability in primary school, so teachers attach great importance to how to improve the level of mental arithmetic teaching.

小学生心算能力的训练和培养是小学数学教学的重要任务之一，怎样提高心算教学质量，是老师非常关心的问题。

youdao