First of all, talk about textbooks.

(1) Teaching content: y-g, the standard experimental textbook of compulsory education curriculum of People's Education Press, teaches the area of unit 5 parallelogram in the first volume of fifth grade mathematics.

(B) the status, role and significance of teaching materials:

The arrangement of geometry knowledge in primary school mathematics is in the order from easy to difficult. The calculation of parallelogram area is taught on the basis that students have mastered and can flexibly use the rectangular area calculation formula and understand the characteristics of parallelogram. Mainly let students use the transformation method to derive the parallelogram area formula and master the formula on the basis of understanding. This lesson plays a connecting role in the whole teaching material system.

(3) Teaching objectives:

According to the requirements of the new curriculum standards and the characteristics of teaching materials, I have set the following goals:

1. Knowledge and skill goal: to enable students to master the calculation formula of parallelogram area on the basis of understanding and to calculate parallelogram area correctly.

2. Process and Methods Objective: Through the observation, comparison and operation of graphics, to develop students' spatial concept, infiltrate the idea of transformation and translation, and cultivate students' analytical ability.

(4) Teaching emphases, difficulties and keys:

Teaching emphasis: make students understand and master the calculation formula of parallelogram area and calculate the area of parallelogram correctly.

Teaching difficulties: make students understand the derivation method and process of parallelogram area formula.

Key points: through the actual operation of cutting, moving and spelling, the difficulties are decomposed.

(5) Preparation of teaching AIDS and learning tools:

Multimedia courseware, students prepare parallelogram pieces of paper, scissors and rulers of any size.

From yG teaching y