高中数学教案下载(高一数学教案格式最新范文-乐题库-教师招聘考试)(3)

3.通由

Seeking

The process of training students' rigorous scientific attitude and good thinking habits.

Teaching Suggestions

(1) In order to stimulate students' interest in learning the sequence of numbers, to experience the role of sequence knowledge in real life, it can be introduced by practical problems, and the problems to be studied in the sequence are abstracted from them, so that students have a good idea of ​​the content to be studied, such as The examples given in the book, as well as the calculation of the number of stacked items.

(2)The function idea contained in the number sequence is the guiding ideology for studying the sequence of numbers. Students should be guided to discover the relationship between the sequence of numbers and functions as early as possible. In teaching, it is emphasized that the items of the sequence of numbers are arranged in a certain order, and the "order" is The argument of a function is a sequence of numbers composed of the same number, and the sequence is different, it is a different sequence of numbers. Function representations include tabular method, image method, and analytical method. Similarly, the number sequence includes enumeration method, graphical method, and general term. Formula method. Since the independent variable of the number sequence is a positive integer, it is possible that two adjacent items (or several items) are related, so that the number sequence has its special representation-the recursive formula method.

(3)Writing out the first few terms of the series by the general term formula of the number sequence is a simple method of substitution. Teachers should carefully design the sample questions to make some preparations for writing the general term formula, especially for the poor degree Students should cite a few more examples so that students can observe the structural relationship between the general term formula and each item, and try to provide help in writing the general term formula.

(4) Write out a general term formula of the sequence from the first few terms of the sequence to make students a difficult point in learning. It is necessary to help students analyze the structural characteristics of each item (integer, fraction, increment, decrement, swing Etc.), the students can summarize some regular conclusions, such as using positive and negative alternately

Adjust and so on. If students cannot write the general term formula for a while, let the students guess the value of the next item or the next few items in the sequence based on the rules of the first few items, so as to find the relationship between the item and the number of items.

(5) has a summation problem for each sequence, so you should add the sequence before this lesson

The concept of item and use

means

The question is a key question, you can ask a specific question first for students to analyze

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