Objective: To obtain the basic data for the introduction and revision Mathematics Test to assess basic mathematical competencies in the elementary school level in China.

目的引进和修订《德国海德堡大学小学生数学基本能力测试量表》，为制订适合中国儿童的测试量表及其参照常模提供基础资料。

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The article main elaboration level elementary knowledge, introduced the level usage, and finally is given a fluctuation layer realization method to solve an online test system.

主要论述层的基本知识，介绍了层的用法，并在最后给出用层来解决一个考试系统的浮动层的实现方法。

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