论文部分内容阅读
一、教材分析本节课选自人教版新课程标准实验教材四年级下册“数学广角”植树问题。教材将植树问题分为几个层次:两端都栽、两端不栽、环形情况以及方阵问题等。本节内容是让学生经历将实际问题抽象出植树问题模型的过程,掌握两端都栽树问题中种树棵数与间隔数之间的关系。让学生在动手实践中经历知识建构的过程,体验植树问题在生活中的应用,培养学生“做数学”的意识,渗透一些研究数学的方法及策略,使学生在生活中学数学,在生活中用数学,并在数学上能有所发展。根据教学大纲、教材内容、新的教学理念和学生实际,确定本节课的教学目标为:1知识目标:经历将实际问题抽象出植树问题模型的过程,掌握两端都栽树问题中种树棵数与间隔数之间的关系。2能力目标:通过尝试探索、实验、
First, the textbook analysis This lesson was selected from the PEP new curriculum standard fourth grade textbook “Mathematics Wide Angle” tree planting problem. Textbooks will be divided into several levels of tree planting: both ends planted, not planted at both ends, the ring situation and the square question and so on. In this section, students are experiencing a process of abstracting practical problems with tree-planting problem models and understanding the relationship between the number of trees planted and the number of bays in growing trees at both ends. Let students go through the process of knowledge construction in hands-on practice, experience the application of tree planting in life, cultivate the consciousness of students in “doing maths”, infiltrate some methods and tactics of studying math so that students can learn maths in life, Use mathematics, and can be mathematically developed. According to the teaching syllabus, the content of teaching materials, new teaching ideas and the actual students, to determine the teaching objectives of this lesson: 1 knowledge goals: to experience the actual problem abstract tree planting problem model process, The relationship between the number of trees and the number of intervals. 2 ability goals: try to explore, experiment,