Third, pay attention to the development of mathematics exchanges technical ability.

第三、注重数学交流技能的培养。

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The National Mathematics Curriculum Standards for Senior Middle Schools (trial) in China, 2003 advocates the development of mathematics communicative competence.

2003年我国的《普通高中数学课程标准（实验）》在课程目标中也提出“提高数学表达与交流能力”。

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Psychologist Susan Levine, an expert on mathematics development in young children the University of Chicago, found children who play with puzzles between the age of 2 and 4 later develop better spatial skills.

心理学家苏珊·莱文是芝加哥大学研究幼儿数学发展的专家。她发现，在2岁至4岁之间玩拼图的孩子在后来会发展出更好的空间能力。

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We know from monitoring children's development for almost a decade that despite lots of money being spent in the early years, standards of early reading and mathematics development haven't increased.

BBC: Viewpoints: Childcare changes

Lands' End also provides a good example of how technological development and increasingly clever mathematics are bringing new services to the internet.

ECONOMIST: Retailers are the top performers online

And of all the artifacts that have aided cognition, the most important is the development of writing, or more properly, of notational systems: number systems, writing, calendars, notational systems for mathematics, engineering, music and dance.

FORBES: Magazine Article