This course is based on the implementation of "Physical Education and Health Curriculum Standards" and takes "Health First" as the guiding ideology. In teaching, we should implement the principle of taking students as the main body and educating people as the foundation, give full play to students' enthusiasm and initiative, give students time and space for self-study and self-exercise, and complete the process transformation of "I want to keep fit-I want to keep fit-I want to keep fit". Improve students' understanding of shaping body shape and physical beauty, establish confidence and behavior to improve body shape and shape, and achieve the purpose of fitness, mental health and bodybuilding.

Second, analysis of teaching materials and learning situation

Aerobics is one of the elective teaching contents of physical education and health course in senior two. It is a popular sport all over the world at present. Because it is ornamental and interesting, it can not only develop muscle strength in all parts of the body, but also be suitable for people of all ages to practice, so it is very suitable for middle school girls to be promoted as a lifelong exercise. Regular aerobics activities can promote the improvement of physical quality such as agility, flexibility and coordination, and cultivate students' aesthetic sentiment. The third level is the last part of the primary standard of aerobics mass exercise, and it is also the connecting part between the primary and intermediate levels. * * * There are 57×8 eight beats. On the basis of the second level, we can further master the basic steps and typical movements of aerobics, and make some changes on this basis. Maintain moderate and low intensity aerobic training. The creation of actions is mainly symmetrical, and the number of repetitions is relatively reduced. An eight-beat has two movements. The basic steps are jumping, stepping, forward step, knee lifting, opening and closing jump, jumping and V step. , and increased the direction change of 90 degrees. When learning these movements, we should pay attention to the essentials and the control and feeling of muscles. This textbook has 14 lesson, and this lesson is 12 lesson. We have learned the three-level routine combination (1)-(4) of mass aerobics in1class before. This class will review and consolidate the combination (4) and the whole set of movements.

The teaching object of this class is 24 female students in Grade Two (1 Class 2), which is an optional physical education class. It has a good style of study and strong organizational ability. Most students are active in learning and have certain self-study and self-training ability, but some students have poor coordination and individual differences. The common shortcoming of students is their lack of strength and expressiveness.

Third, the focus and difficulty of teaching

1, key points: the movements are standardized and coherent, and the whole body is coordinated.

2. Difficulties: Sports strive for "beauty" on the basis of "health"

Fourth, teaching ideas

This lesson is divided into four parts: introduction to passion, study practice, quality practice and pleasure and relaxation. Through music practice, the second-level routine of mass aerobics introduces passion, injects youth and vitality into this course, enables students to gain happy emotional experience, stimulates their enthusiasm for learning music, and paves the way for the smooth transition of the main teaching materials. In the learning and practice stage, teachers and students guide the exercises to strengthen and consolidate the movements from the mass three-level aerobics combination (1) to the combination (3), and then teachers emphasize the movement characteristics of the combination (4) to consolidate the combination (4). And inspire students to cooperate in learning, consolidate the whole set of combined movements, teachers tour guidance, prompt in time, and find problems in the process of students' self-study. And organize students to show in groups, everyone watches each other, encourages each other, and evaluates each other among groups. In the quality practice stage, students' flexibility is exercised through leg press exercises. In the stage of pleasure and relaxation, we use the ballet hand and stretching exercises we have learned to relax collectively with the accompaniment of music.