2024年5月11日发(作者：)

长方形和正方形的周长（The perimeter of a rectangle and a

square）

The perimeter of rectangles and squares

Qinyang Experimental Primary School Wang Miaomiao

Honorable judges, teachers:

Hello everyone！ Today I'm going to talk about the topic is

"rectangular and square perimeter", I will illustrate from the

following five aspects: teaching materials, teaching methods,

learning method, teaching process, said blackboard design.

First, teaching materials

"The perimeter of rectangle and square" is compulsory

curriculum standard textbook on the content of the third grade

students, this class is in the basis of understanding of

rectangular and square planar graph on teaching, this is the

first time the students contact perimeter, calculation of all

kinds of graph perimeter will play a crucial role.

Under the new curriculum idea, teaching goal setting should be

based on the students' learning process; the development of

students, to cultivate students' ability; while strengthening

the consciousness of application, three effective integration

and implementation". Therefore, according to the

characteristics of the teaching materials and the actual

situation of students, the following three-dimensional goals

are set as follows:

1, the students through observation, hands-on operation,

cooperation and communication activities to understand the

meaning of the perimeter.

2, through the exploration of rectangular and square perimeter

calculation process, master rectangle and square perimeter

calculation method.

3, the use of rectangular and square perimeter calculation

method to solve simple problems in life, so that students feel

the close connection between mathematics and life.

Teaching emphasis:

Understand the meaning of the perimeter and master the methods

of calculating the perimeter of rectangles and squares.

Teaching difficulties:

Can use rectangular and square perimeter calculation method to

solve simple problems in life.

Teaching aids preparation:

Multimedia courseware, rope, ruler, tape, small leaves, small

red flag, clocks, five pointed stars and so on

Two, say teaching method

According to the above goals, I chose the following teaching