陕旅版三年级下册英语Unit 1 My body-Part B-ppt课件-(含教案+素材)--(编号：a023e).zip

Mothers Love My dear friends, Good morning, my dear teachers and friends! My name is Wa ng Zihan.Im from Hongjia Primary School. Today, I am very happy to be here. My topic is “Mothers Love”. Do you know what is the most precious and everlasting thing in the world ?Money?You may lose everything you have if you dont use money carefull enough.Youth?In ones long life youth is like a flash in the pan and no one in the world has the secret to keep his youth forever.Beautiful look?Many people pray that they can get hold of beauty,but it disappears far more quickly than they can imagine. And when they are in real trouble beauty feels helpless. Then what is the most precious and everlasting thing in the world? When you are far away from your family and feel especially lonely,Who will you think of?When you stand on the crossoad in your life and dont know which way to choose,who will you think of?When you encounter greater difficulties than ever and need others encouragement,who will you think of?When you decide to make the greatest decision in your favorite course,who shed cheerful tears when see you get achievements?Whose whole hearted blessing will be always with you no matter how far you will go? Yes,its mother who you will always think of and its mothers love that willbe always be with you. I once heard a moving story about a mother.Two children were drawn into the flood and the situations was very dangerous.Their mother jumped into the water without hesitation.But the mother couldnt swim at all.Jumping into the water means she might lose her life.But at that time she had no time to think about herself.She just wanted to try all means to save her children.Maybe her courage touched the God.The miracle happened.She finally succeeded in saving her both children.And she,of course,felt extremely exhausted. My friends,mothers love is the greatest love.Mothers love is the safest love.No matter you are happy or depressed ,rich or poor ,mothers love will always stay with you. Thats all,thank you. 四年级 地震的预测与防范 学习目标 1、了解地震的震级、预报； 2、知道地震前的征兆。 地震的预测与防范 汶川地震现场图 地震的预测与防范 云南鲁甸地震现场图 地震的预测与防范 日本地震现场图 地震的预测与防范 猛烈的地震会给人类带来难以磨 灭的伤痛，你们了解地震吗？地 震可不可以被预测，我们可不可 以提前做好防震措施呢？ 地震的预测与防范 一、地震的震级 地震的预测与防范 震级是指地震的大小，震级越高，地震的破坏 力就越大。 地震的预测与防范 地震分为九个震级，一般小于2.5级的地 震人是感觉不到的；2.5级以上人才能够 感觉得到；5级以上的地震会造成破坏。 地震的预测与防范 2014年8月3日，云南鲁甸发生6.5级地震,房屋倒塌，人员死伤惨重 。 地震的预测与防范 地球上每年约发生500多万次地震 ，每天要发生上万次地震。不过， 它们之中绝大多数太小或离我们太 远，我们无法感觉到。 地震的预测与防范 你知道我国最近的一次八级 大地震发生在什么地方吗？ 地震的预测与防范 二、地震的预报 地震的预测与防范 地震预报即提前预测地震发生的时间、地点 、震级，使人们提前防范。 地震的预测与防范 地震预报只能由各级政府 发布，任何单位和个人都 无权发布地震预报。 地震的预测与防范 地震预报是世界公认的科学难题 ，目前只对中长期预报有一定的 认识，但仍无法预测地震发生的 确切时间。特别是短临预报，主 要是经验性的。 地震的预测与防范 你听说过我国东汉时期的科学家张衡吗？ 他最具代表性的发明是什么呢？ 地震的预测与防范 地动仪 它有八个龙头，代表 八个方位，在每条龙 头的下方都有一只蟾 蜍与其对应。任何一 方如有地震发生，该 方向龙口所含铜珠即 落入蟾蜍口中，由此 便可测出发生地震的 方向。 地震的预测与防范 1975年，我国成功预报了2月4日发生 于辽宁海城的7.3级强烈地震，地震前 一天疏散了一百万人，使这次地震的 伤亡和损失大大减小。 地震的预测与防范 三、地震的前兆 地震的预测与防范 知知 识识 屋屋 地震发生前会出现一些征兆。有些征兆感官无法觉察，如 地面的变形、地球的磁场变化等，需科学家用仪器测试。 地震观测井 地震的预测与防范 有些前兆人们可以觉察，学会识别它们，对防震减灾有重要作 用。如井水的升降、变浑，动物行为反常，地声、地光等。 城市上空出现异常地震云池塘河水发生冒泡现象 地震的预测与防范 地震前会有以 下异常征兆： 地震的预测与防范 1.地下水往往会发生突然升、降，井水发生打旋 、冒泡、变色、变味等现象。 地震的预测与防范 2.动物表现异常，如鸡不进窝、狗狂吠、 老鼠出洞乱窜、冬天蛇出洞等。 地震的预测与防范 3.震前出现暴雨、大旱、大涝、大雪或骤然酷热等反常 极端气候现象。 地震的预测与防范 4.震中区域附近常常会出现形态各异的光带、光柱、火球 、光团等。 地震的预测与防范 5.会出现地光，颜色常见的有蓝、白、红、黄 等，之后会发生地声，其声音像打雷、狂风、 狮吼、放炮等。 地震的预测与防范 井水、动物等异常可能是地震前兆，也可 能是其它原因，因此发现异常后不要惊慌 ，应及时向地震部门反映。（地震部门电 话为：（010）62009003） 中小学生公共安全教育四年级 What do they have on the farm?教学设计教学设计 一、 复习导入 1、T: What is it？ S:Its a 2、They have 3、板书课题 二、新授 1、T: What is your father? What is your mother?what are your father and mother?what are they? S: They are 2、T: What is your grandpa? What is your grandma?what are your grandpa and grandma?what are they? S: They are 三、学习句型 My grandpa is a farmer. My grandma is a farmer,too.They are farmers.They have a farm.Look at the picture. What do they have on the farm? S1:They have many animals on the farm. S2: S3: 四、学习课文 1、Listen to the radio and answer the questions: what are Li Shans grandpa and grandma? What do they have on the farm? 2、Ask the students answer the questions. 3、Read the dialogue after the radio. 五、操作 1、分角色朗读并表演对话。 2、听音猜动物。 六、作业 熟读对话并背诵。 板书设计： What do they have on the farm? What do they have on the farm? They have