人教版二年级美术叶脉书签的制作素材课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,二级,三级,四级,五级,*,*,叶脉书签的制作,叶脉书签的制作,1,工具与材料：烧杯、三脚架、石棉网、酒精灯、火柴、旧牙刷、镊子、解剖盘、氢氧化钠、树叶（桂花树叶、樟树叶、桉树叶、）。,工具与材料：烧杯、三脚架、石棉网、酒精灯、火柴、旧牙刷、镊子,2,制作过程：1把约90毫升水倒入烧杯，在水中加入10克氢氧化钠，把烧杯搁在石棉网上，用酒精灯加热，煮沸溶液。,制作过程：1把约90毫升水倒入烧杯，在水中加入,3,人教版二年级美术叶脉书签的制作素材课件,4,2把树叶浸没在溶液中，继续加热15分钟左右，用镊子轻轻搅动，使叶肉分离，腐蚀均匀。,2把树叶浸没在溶液中，继续加热15分钟左右，用镊子轻轻搅,5,人教版二年级美术叶脉书签的制作素材课件,6,人教版二年级美术叶脉书签的制作素材课件,7,3当叶片变色、叶肉酥烂时，用镊子取出叶片，放在盛有清水的玻璃杯内。,3当叶片变色、叶肉酥烂时，用镊子取出叶片，放在盛有清水的玻,8,人教版二年级美术叶脉书签的制作素材课件,9,4从清水里取出叶片，放在解剖盘上，用旧牙刷在流水中轻轻地刷叶片的正面和背面，刷去叶片的柔软部分，露出叶脉。,4从清水里取出叶片，放在解剖盘上，用旧牙刷在流水中轻轻地刷,10,趁叶脉还未干透，将叶脉置于各种染料中染色。用毛笔涂上水彩颜料（也可浸在彩色墨水中染色）。然后用清水进行冲洗以去除叶表面的浮色。凉干后，放在书中压平。在染色中，以墨水作为染料往往所需要的时间较长，一般为2-3小时。而用水彩作染料只需要10分钟左右。,趁叶脉还未干透，将叶脉置于各种染料中染色。用毛笔涂上水彩颜料,11,5叶脉片放在旧书或旧报纸里压干。,5叶脉片放在旧书或旧报纸里压干。,12,人教版二年级美术叶脉书签的制作素材课件,13,人教版二年级美术叶脉书签的制作素材课件,14,人教版二年级美术叶脉书签的制作素材课件,15,1,、,Genius only means hard-working all ones life,.(Mendeleyer,Russian Chemist),天才只意味着终身不懈的努力。,20.8.58.5.202011:0311:03:10Aug-2011:03,2,、,Our destiny offers not only the cup of despair,but the chalice of opportunity.,(Richard Nixon,American President),命运给予我们的不是失望之酒，而是机会之杯。二二年八月五日,2020,年,8,月,5,日星期三,3,、,Patience is bitter,but its fruit is sweet.,(Jean Jacques Rousseau,French thinker),忍耐是痛苦的，但它的果实是甜蜜的。,11:038.5.202011:038.5.202011:0311:03:108.5.202011:038.5.2020,4,、,All that you do,do with your might;things done by halves are never done right.,-R.H.Stoddard,American poet,做一切事都应尽力而为，半途而废永远不行,8.5.20208.5.202011:0311:0311:03:1011:03:10,5,、,You have to believe in yourself.Thats the secret of success.,-Charles Chaplin,人必须相信自己，这是成功的秘诀。,-Wednesday,August 5,2020August 20Wednesday,August 5,20208/5/2020,6,、,Almost any situation-good or bad-is affected by the attitude we bring to.,-Lucius Annaus Seneca,差不多任何一种处境,-,无论是好是坏,-,都受到我们对待处境态度的影响。,11,时,3,分,11,时,3,分,5-Aug-208.5.2020,7,、,Although the world is full of suffering,it is full also of the overcoming of it.,-Hellen Keller,American writer,虽然世界多苦难，但是苦难总是能战胜的。,20.8.520.8.520.8.5,。,2020,年,8,月,5,日星期三二二年八月五日,8,、,For man is man and master of his fate.-,-Tennyson,人就是人，是自己命运的主人,11:0311:03:108.5.2020Wednesday,August 5,2020,9,、,When success comes in the door,it seems,love often goes out the window.-,-Joyce Brothers,成功来到门前时，爱情往往就走出了窗外。,11:038.5.202011:038.5.202011:0311:03:108.5.202011:038.5.2020,10,、,Life is measured by thought and action,not by time.,Lubbock,衡量生命的尺度是思想和行为，而不是时间。,8.5.20208.5.202011:0311:0311:03:1011:03:10,11,、,To make a lasting marriage we have to overcome self-centeredness.,要使婚姻长久，就需克服自我中心意识。,Wednesday,August 5,2020August 20Wednesday,August 5,20208/5/2020,12,、,Treat other people as you hope they will treat you.,你希望别人如何对待你，你就如何对待别人。,11,时,3,分,11,时,3,分,5-Aug-208.5.2020,13,、,To do whatever needs to be done to preserve this last and greatest bastion of,freedom.,(Ronald Reagan,American President),为了保住这最后的、最伟大的自由堡垒，我们必须尽我们所能。20.8.520.8.5,Wednesday,August 5,2020,14,、,Where there is a will,there is a way.,(Thomas Edison,American inventor),有志者，事竟成。11:01:1911:01:1911:01,8/5/2020 11:01:19 AM,15,、,Every man is the master of his own fortune.,-Richard Steele,每个人都主宰自己的命运。20.8.511:01:1911:01,Aug-205-Aug-20,16,、,As selfishness and complaint cloud the mind,so love with its joy clears and sharpens the vision.,-Helen Keller,自私和抱怨是心灵的阴暗，愉快的爱则使视野明朗开阔。11:01:1911:01:1911:01,Wednesday,August 5,2020,17,、,Do not,for one repulse,give up the purpose that you resolved to effect.,-Willian Shakespeare,British dramatist,不要只因一次失败，就放弃你原来决心想达到的目的。20.8.520.8.511:01:1911:01:19,August 5,2020,18,、,There is no absolute success in the world,only constant progress.,世界上的事没有绝对成功，只有不断的进步。2020年8月5日星期三上午11时1分19秒11:01:1920.8.5,19,、,Nothing is more fatal to happiness than the remembrance of happiness.,没有什么比回忆幸福更令人痛苦的了。2020年8月上午11时1分20.8.511:01,August 5,2020,20,、,No man is happy who does not think himself so.,Publilius Syrus,认为自己不幸福的人就不会幸福。2020年8月5日星期三11时1分19秒11:01:19,5 August 2020,21,、,The emperor treats talent as tools,using their strongpoint to his advantage.,君子用人如器，各取所长。上午11时1分19秒上午11时1分11:01:1920.8.5,谢谢观看,THE END,1、Genius only means hard-worki,16,