The new lesson change; Primary school mathematics; Teaching; Method.

新课改；小学数学；教学；方法。

youdao

That mathematics history goes into primary school mathematics classes is a kind of necessity.

数学史走进小学数学课堂是一种必然。

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Development student calculation the ability be teacher's teaching of primary school mathematics of an importance the mission is a student study mathematics of importance foundation.

计算能力是每个人必须具备的一项基本能力，培养学生计算能力是小学数学教师教学的一项重要任务，是学生今后学习数学的重要基础。

youdao

The IEA is probably best known for its Third International Mathematics and Science Study (TIMSS), an international large-scale assessment of learning outcomes (ILSA) for primary school learners in science and mathematics, as well as for PIRLS (Progress in International Reading Literacy Study).

UNESCO: Article on assesment