设计背景在体会数系的发展过程中,理解复数意义的基础上,实现让学生掌握复数代数形式的四则运算这一教学目标是很容易实现的,但新课程理念下的教学要求远不止这些它更要学生在丰富、现实的与他们的经验紧密联系的背景中感受数学、建立数学、运用数学让学生在恰当的情景中观察、 Design Background It is easy to realize the teaching goal of enabling students to master the arithmetic of the fourth generation of complex algebra form while understanding the development of the number system and understanding the meaning of the complex number. However, the teaching requirement under the new curriculum concept goes far beyond these. But also to students in the rich, realistic background in close contact with their experience in mathematics, the establishment of mathematics, the use of mathematics for students to observe the appropriate scenarios,