Teaching objectives:
1. Educate students about the health benefits of personal hygiene.
2. Cultivate students' good personal hygiene habits.
Teaching focus:
Why do people often wash their hair, take a bath, get a haircut and change clothes?
Teaching difficulties:
Why do people often wash their hair, take a bath, get a haircut and change clothes?
Teaching AIDS:
Multimedia, wall chart
Instructional design:
First of all, talk about introduction.
Question: Do you know the interval between haircuts? How often to take a bath; How often do you change clothes?
Second, explore new knowledge.
1. Why do people wash their hair?
2. Students answer.
Because people's hair is exposed to the outside, it is easy to be dirty by dust, plus scalp oil secretion and sweat impregnation, which is easy to form dirt. Therefore, it is necessary to wash frequently to promote the healthy growth of hair. Otherwise, under the action of bacteria, the hair will stink, the scalp will itch, it will be inflamed by hand scratching, and sometimes it will cause tinea capitis.
3. Why do people often take a bath and change clothes?
(1) Bathing is an indispensable part of personal hygiene.
Bathing can remove aging cells in time, wash away sweat stains and oil stains on the skin, make pores smooth, and people will feel comfortable, relaxed and full of vitality.
(2) Due to water temperature, water pressure and some elements contained in water, skin blood vessels can be dilated, and blood circulation and skin excretion can be promoted when bathing. Improve skin nutrition, relax muscles and eliminate fatigue.
(3) Change clothes: clothes are divided into underwear and outerwear, and outerwear should be changed frequently to keep it clean and hygienic. Underwear should be selected according to seasonal changes. In summer, when the climate is hot or after work, people have to sweat a lot, and their clothes get wet, so the air permeability will be reduced, which is not conducive to heat dissipation. Therefore, linen, silk, wool, cotton and other fabrics with good air permeability and moisture absorption should be selected in summer. Underwear made of cotton and wool should be selected in winter. Don't wear fabric underwear. Change it once a day in summer and 2 ~ 3 times a week in winter.
4. How long does it take to get a haircut?
As a student, you should have a student's hairstyle. The length of hair is the embodiment of students' mental outlook and appearance. Regular haircut and daily grooming have massage effect on scalp, which can promote scalp blood circulation and hair follicle metabolism, be beneficial to hair growth and prevent scalp diseases. Male students should have short hair and have their hair cut every three weeks. Female students' hair should not be over the shoulder and should not be permed. It should be trimmed every other month.
Third, class summary.
As a pupil, it is very necessary to do a good job in personal hygiene. Personal hygiene can not only reflect a student's mental outlook and appearance, but also promote his healthy growth.
Blackboard design:
promote health
Do a good job in personal hygiene and prevent diseases.
Makes people look beautiful.