Teaching material analysis:

1. A brief analysis of the teaching content: "A number divided by a decimal" is the knowledge of Unit 2 of the first volume of the fifth grade primary school mathematics published by People's Education Press. The content of this paragraph is based on students' mastery of the invariance of integer division, decimal division into integer and quotient. "Dividing a number into decimals" is widely used in production and life, and occupies an important position in primary school mathematics learning, which is one of the key and difficult contents of this textbook.

The textbook * * * arranges two examples. Example 5 of the above example mainly solves the problem of calculation strategy, that is, division with decimal divisor can only be calculated after it is converted into division with integer divisor. The latter example 6 mainly solves the concrete operation problem of transformation, that is, how to convert divisor from decimal to integer according to quotient invariance.

2. Analysis of learning situation: Through the study of the first four examples, students have mastered the calculation method of dividing decimals by integers. At this time, students are eager to know how to calculate the divisor if it is a decimal. It is with this problem that students have a strong desire for knowledge about this part of new knowledge.

Judging from the knowledge that students have mastered, they have the ability to use the old knowledge of "the immutability of business" to transform it into new knowledge. However, students' ability to use new knowledge to solve practical problems is obviously different, but different students have different potentials. Combined with the above, it can be seen that in the process of learning this part of the content, the difficulty is not the calculation method, but the shift of the decimal point.

Teaching objectives:

According to "Curriculum Standard", combined with the content of teaching materials and students' reality, the following teaching objectives are formulated: knowledge objectives: through research, students can understand the division operation of divisor as decimal, master the division calculation method of divisor as decimal, and calculate correctly.

Ability goal: to cultivate students' analytical ability, analogy ability and abstract generalization ability in the learning process. Through cooperation and exchange, cultivate students' language expression ability and evaluation ability.

Emotional goal: infiltrate students with "transformed" mathematical ideas; Let students experience the practical significance of calculation through learning and feel the close connection between mathematics and life.