发散思维的主要特征是思维的流畅性、变通性和独创性。在四则计算教学中,应有目的地进行多种训练,在加强双基,提高学生计算能力的同时培养学生的发散思维。联想训练与培养思维的流畅性联想是指由这一事物想到另一事物的心理过程。在四则计算的基础知识教学中,可引导学生进行由一种运算的算理和规律(法则、定律和性质)联想另一种运算的算理和规律的训练。联想算理。如,学习异分母分数加减时,可引导学生联想计算整数、小数加减时要求相同数位对齐,小数点对齐的目的是:使计算单位相同的数相加减。从而理解通分的目的是:化计算单位不同的分数为 The main characteristic of divergent thinking is the fluidness, adaptability and originality of thinking. In the four calculation teaching, there should be a variety of training for the purpose, strengthen the double base, improve students 'computing ability at the same time develop students' divergent thinking. Lenovo training and fostering thinking fluent Lenovo is the mental process from this thing to another thing. In the four calculations of basic knowledge teaching, students can be guided by a calculation of the laws and laws (law, law and nature) associative computing and regular arithmetic training another. Lenovo arithmetic. For example, learning different denominator fractional addition and subtraction, can guide students to calculate integer integers, decimal addition and subtraction require the same digit alignment, the purpose of decimal point alignment is: the same number of units of the same unit of addition and subtraction. To understand the purpose of the pass is: the calculation of different units of the scores