简述小学数学教学论的研究对象。学习和研究小学数学教学论的意义有哪些？

简述选择小学数学教学手段的依据，如何有效地运用小学数学教学手段的条件？

简述小学数学教学设计的基本内容和过程，新理念下的小学数学教学设计包括哪些内容？

小学阶段最常用的数量关系，也是小学阶段最重要的数学模型是什么？

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

小学数学课程目标就是要回答为什么要开设数学这一学科，数学学科对小学生有哪些特殊的教育作用和共同的教育作用，通过数学这一学科的教学应当使学生达到什么样的要求。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。