白露和寒露都是二十四节气中的秋季节气。寒露节气的露水比白露寒冷,通常凝结成霜。每年9月7日到9日是白露节气,每年的10月8日或9日是寒露节气。那么寒露和白露节气有什么区别呢?要想知道露和白露节气的区别请看下文吧。
白露后,天气转凉,开始出现露水,到了寒露,则露水增多,且气温更低。此时我国有些地区会出现霜冻。谚云:“白露身不露,寒露脚不露。”这句谚语提醒大家:白露节气一过,穿衣服就不能再赤膊露体;寒露节气一过,应注重足部保暖。
“白露”之后气候冷暖多变,特别是一早一晚,更添几分凉意。如果这时候再赤膊露体,穿着短裤,就容易受凉诱发伤风感冒或导致旧病复发。体质虚弱、患有胃病或慢性肺部疾患的人更要做到早晚添衣,睡觉莫贪凉。秋天病菌繁殖活跃,加之气候比较干燥,易造成病毒、细菌等病原微生物的传播,所以,秋季是呼吸道疾病的多发季节。
寒露过后,气候冷暖多变、昼夜温差变化较大,稍不注意,就易着凉伤风,诱发上呼吸道感染。此外,患有慢性胃病的朋友,生活中也应尽量注意保暖,避免因腹部受凉而导致胃病复发或加重。
教学目标:
1.引导学生在游戏活动中大胆动手,大胆想象,在快乐中作文。
2.选择自己喜欢的手影,初步学会写故事中的对话。
教学重点、难点:
选择手影、学编故事,练写对话。
教学准备:
手影视频、教学课件、小奖品。
教学过程:
Nowadays, advertisements can be found everywhere in big cities. They shout at us from the television screen and radio loudspeakers, wave to us from every page of the newspaper, signal to us from the roadside billboards all day and flash messages to us in colored lights all night.
Faced with a flood of advertisement, some people wonder whether it is necessary to have such huge sums spent on advertising. They often cite in illustration of it the attractive, but false and deceptive advertisements to which many consumers fall victim. Why don't we stop advertising and use the money to reduce the price of goods? It sounds like a good idea, but they fail to notice the contribution advertising makes to our society. Because the production of a better product to compete for customers' money is the goal of advertisers, customers are thus given a chance to compare their products and get the best and cheapest one. Besides, as the advertisement can provide people with a lot of immediate and detailed information as to the availability of a certain product, or a service or a job, it makes life much more convenient. And another thing we mustn't forget: the fact that we pay so little for our daily newspapers and TV programs is due entirely to the money spent by advertisers.
Advertising performs such a useful service to our society that we can't imagine what would happen if there were no advertisements. (198 words
1.教师引领,走近手影
(1)告诉大家一个小秘密,袁老师也喜欢玩手影。
(出示幻灯:天空、树林、草地、小河组合画面)
(2)师玩手影。认真看(做小孔雀状),袁老师玩出什么来啦?(孔雀)
(3)(手抖动,作跳舞状)孩子们,看,美丽的小孔雀在草地上干什么呀?如:美丽的小孔雀在草地上跳舞。
美丽的小孔雀在绿油油的草地上秀它的大尾巴。
美丽的小孔雀在绿色的草地上比美。
(4)说得真棒!你们也想玩吗?(贴板书:玩)
2.学生实践,创新手影
你们会玩手影吗?指名生玩手影,并让学生练说。
(1)边玩边练说:我玩的是,它在(什么地方)(干什么)。
要求:一个小朋友表演,别的小朋友要认真看、大胆想,围绕她做的手影讨论讨论。(出示幻灯四:认真看大胆想)(贴板书:说)
(2)插上想象的翅膀,把画面说具体。
© 2022 xuexicn.net,All Rights Reserved.