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1000初中生物教学日记
全文共 1223 字
+ 加入清单生物学是一门以实验为基础的自然学科。实验教学可以帮助学生形成概念、理解和巩固生物学知识,培养学生观察现象、提出问题、分析问题和解决问题的能力;帮助学生掌握一些常用的生物学实验的基本技能,培养学生实事求是、严谨细致的科学态度和科学方法。多年的教学实践告诉我们:生物实验教学过程中要始终坚持三个基本原则,即:客观性原则;严谨认真的原则;尊重学生,灵活引导的原则。在实验教学过程中,应切实做到以下几点:
一、尊重客观规律,坚持实事求是。
在平时的学生实验中,经常出现这种现象:当实验得不到正确结果时,学生常常是马虎应付,实验课堂一片混乱,铃声一响学生不欢而散;当老师催要实验报告时,他们就按课本上的理论知识填写实验报告;还有的学生在规定时间内完不成该做的实验项目,就抄袭他人的实验结果,或凭猜测填写实验结论等等。这样就不能达到实验教学目标。可见,对生物实验教学,必须要加强理论学习,提高实验教学技能,树立严谨细致、认真科学的态度,要尊重客观规律,实事求是,实实在在地引导学生完成实验教学的任务,才能达到理想的目的。
二.认真完成实验环节,注重操作引导。
在实验教学工作中,无论是实验员准备实验,教师演示实验,或者指导学生实验,以及对待实验的严格态度等方面,处处、时时、事事都要体现教师的言传身教,只有教师教得扎实,学生才能学得牢固。因此,严格搞好实验课的“备、教、导”是上好实验课不可或缺的基本环节。
1、备好实验课是上好实验课的首要前提
教材中要求做的实验,无论简单也好复杂也好,都必须要备好课,写好切实可行的教案,并且在实验课之前要亲自动手做一遍,即预备实验。教师做了,才可能指导学生如何应对操作过程中每一个细节可能出现的问题,看到实验现象,学到真正的实验方法和科学知识,培养学生发现问题、解决问题的能力;若不备课,不亲自做实验,凭空想象,黑板上做实验,那就没有明显效果,更没有说服力了。甚至会出现,全体学生实验失败等不该发生的现象。
2、注重实验引导
指导学生实验时,既要面面俱到,事无俱细进行引导,同时,又要注意切忌包办代替。从实验材料的选择、仪器的装配到操作步骤和技巧,既要科学规范,又要密切结合具体实际,在尊重学生主体地位的同时,充分发挥教师的引导作用,以保证现象清晰,结果正确。如做“叶绿素的提取和分离”的实验时,在不同的季节可以采用不同的绿叶作为材料。
3、注重实验结果的分析与小结
要求学生,在填写实验报告时,要如实填写。实验失败时,要如实地与学生一起分析失败原因,可课后补做。如果学生实验失败,我们就通过示范帮助学生掌握操作技能,取得实验成功,或帮助分析失败原因让学生重做,直至成功。不能听之任之,否则,就达不到实验课的预期目的。
此外,对一些特殊的材料、仪器和试剂,以及实验的目的和原理都要加以必要的说明,如选材的原因、仪器的功能、试剂的配备等。例如:做“叶绿素的提取与分离”实验时,层析液的配制;以及“质壁分离与复原”实验中,紫色洋葱表皮的选择等等。
更多相似作文
篇1:短篇英语日记带翻译
全文共 433 字
+ 加入清单Today, I did housework for grandmother. She is not very healthy and I
decide to do housework for her more frequently. And she will feel happy and
become better. Suddenly, an idea hit me that it’s terrible to grow old becuase
you have to worry about both your health and others’ opinions. Once again, I
make a decision to be a good girl.
今天,我帮助了奶奶做家务。奶奶的身体不好。我以后要常帮她做事。这样她就会高兴身体也会好一些。突然觉得,人老了真不好。不但身体不会好,而且一不小心就会惹得大家讨厌。我又做了一个决定,以后一定要做个乖孩子。
篇2:初中英语日记
全文共 302 字
+ 加入清单July 10 20XX
I am planning to spend my summer holiday on sports this year. Playing basketball is always my favourite, so some of my classmates and I will form a small team and play basketball together. Sometimes we may have a match against some other teams and I do enjoy the sense when we win the game.
篇3:初中英语感恩母亲
全文共 539 字
+ 加入清单It was Mother’s Day. Sun Zheng thought he should do something for his
mother. He decided to help his mother do some housework. After school he went to
a shop to buy some food on his way home.
When he got home, he did his best to cook some nice food,though he couldn’t
do the cooking well. Thenhe cleaned the room. He felt very tired, but he was
very happy.
When his father and his mother came back and saw the clean rooms and dishes
which weren’t so nice, they were very happy.They had their supper together. His
mother said, "Thank you,my child!"
篇4:关于亲情的细节初中日记
全文共 655 字
+ 加入清单世间的每一个人无不对亲情深深地在意,无不渴望天空般高远、大海般深邃的亲情。古往今来,亲情曾被多少诗人讴歌,被多少常人惦念。
曾经有人说过,上帝因为不能亲自到每家每户,所以他创造了母亲。我国的佛经中也曾说,当小马长到和母马一模一样的时候,想要辨别,只要看它们吃草时的情形。因为母马总是自己不吃草,把草推向小马的方向去。这就是动物中的母爱。记得在法国这么一个故事:一个母亲宠爱她的浪子,浪子所求,无所不应。有一天浪子回家,说他的情妇要他母亲的心,母亲立刻拿了一把刀,把心挖出来,交给了他。高兴的浪子提着母亲的心,狂奔着去讨好他的情妇。在路上不小心跌了一跤,正要爬起来走的时候,忽然听到一个微弱而挚爱的声音焦急地说:“哎哟!我的宝宝,你摔坏了没有?”
在我心中,妈妈是伟大的。
记得那是我5岁的时候,有一天夜里,我躺在床上翻来覆去睡不着觉。妈妈觉得不对劲儿,一摸我的头,哎呀,这么热。因为爸爸出差去了。您马上给我穿上衣服,而您,却顾不得穿上外套,为了不打扰左邻右舍,便背着我直奔医院。
因为是冬天,寒风刺骨,寒气逼人,但是我在您的背上仍感到无比温暖。路上,您那有力的双手托着我。但我从您走路的节奏中,感到您十分疲惫,速度放慢了许多。漫漫的,我在您的背上睡着了……等我醒来,已经是第二天早上了,我躺在家里的床上,妈妈坐在我床头,您看我醒了,就拿出医生开的药,倒了一杯开水,递给我。那时,我看到您的眼睛里布满了血丝,知道您一夜没合眼了,我不禁哭了起来,您先是一愣,然后放下手中的东西,抱着我说,乖宝宝,不用怕,吃了药就会好的……
篇5:英语日记50词
全文共 251 字
+ 加入清单I didnt go anywhere today. I stayed at home doing my homework and helping my
mother with housework. I realised it was not easy to do so much housework allby
oneself. I should help mother more in the future.
我今天什么地方也没有去。在家帮妈妈做家务。我认识到,一个人做家务不容易。以后我要多帮妈妈的忙。
篇6:杰出的女性初中英语作文
全文共 876 字
+ 加入清单Helen Keller lived in the U.S.A. She was a great woman. When Helen was a baby,she got very sick. Afthe many weeks,the doctor said:"she is better,but now she cant see and she cant hear." Her mother and father were very sad . Afthe a few years,things got worse. There was no way for Helen to speak to other people. She heard nothing. She saw nothing. She didnt undertand anyting. Then one day a teacher come to live with Helen and her family. The teacher helped Helen learn about words. Helen was a bright child and soon she learned to spell her first word. When she was older,she went to college. Helen was very famous. She helped many blind and deaf people. She traveled around the world and helped many people. Helen was a very old woman when she died. The world remembers her today as a brave and wonderful person. She was blind and deaf,but she found a way to see and hear.
篇7:英语日记格式
全文共 486 字
+ 加入清单As is well known, books teach us to learn life, truth, science and many
other useful things. They increase our knowledge, broaden our minds and
strengthen our character. In other words, they are our good teachers and wise
friends. This is the reason why our parents always encourage us to read more
books.
Reading is a good thing, but we must pay GREat attention to the choice of
books. It is true that we can derive benefits from good books. However, bad
books will do us more harm than good.
篇8:愉快的寒假生活初中日记
全文共 674 字
+ 加入清单期末考试结束了。终于可以和紧张的学习进行短暂的告别,开始愉快的寒假生活了。尤其新年将至,我的心情显得格外轻松雀跃。
当我兴高采烈的到达枝江爷爷奶奶的家门口时,两位老人家早已经在路边盼望多时。我扑到奶奶怀里告诉她我有多么的想念她。爷爷拉着我的手,满脸笑容的问着我的成绩,当得到满意的答复时,他笑盈盈的递给我一个大大的红包。我开心极了!
可惜好景不长。有一天晚上妈妈正看着手机新闻,她突然神情紧张的和爸爸说:“糟了,今晚12点过了,我们枝江要封城了。看来事态严重啊。”我在旁边大吃一惊,心想:这真可怕!封城了,我们是不是回不了我上学的城市——宜昌了?
第二天刚起床,妈妈就拿出了口罩命令我们全家必须戴上。并且再三强调了病毒的危害性和传染性。大家都自觉的把口罩戴上了,唯独爷爷不屑一顾。看着爷爷轻视的态度,我很着急的跑向爷爷:“爷爷,你天天看新闻,你就不知道这场病毒的危害吗?你必须戴好口罩!”
爷爷笑嘻嘻地说:“孙子,这可不行呀!我还忙着要去地里照看蔬菜呢,管什么病毒呢。再说了,病毒离我们这么远,不会传染到我们农村的。”
“走,我们去看新闻。”我拉着爷爷的手来到电视前,“你看看每天新增加的人数再来和我理论。”我装作很生气的样子严厉地对他大吼来。
盯着电视上的新闻,望着不断上升的患病人数,看着医生护士们连日不断工作辛苦疲惫的神态,我的心都揪起来了。我深刻感受到这场病疫的凶险和_它所需要付出的艰难。我转过头,发现爷爷不知道什么时候早已自觉的戴上了口罩了。
这次的春节过的不同寻常却又意义非凡。它让我感受到了家的温暖,也让我懵懵懂懂的明白了作为中国人的社会责任感。
篇9:英语日记100字
全文共 588 字
+ 加入清单Today is the Duanwu Festival.It is a special festival in China.On this
day,we usually eat zongzi,a kind of food that is made of rice.So I tried to cook
some zongzi today.First,I bought some bamboo leaves.It is an important part of
zongzi.I made the leaves in the shape of small bottles.Next,I put in some rice
and meat.So the leaves can make the rice more delicious.Then,I found some thin
ropes and tied up the leaves——And then the zongzi was finished.The final step
was to boil some water and cook them.It was hard work,but I tried my best and it
was the most delicious zongzi I had ever eaten.
篇10:寒假英语作文初中
全文共 1230 字
+ 加入清单Let my little niece winter vacation homework today, she readily agreed, she
took out a pile of books from the school bag and book, Ill ask her winter
vacation homework you have so much? She said, "yeah, were going to do winter
vacation homework book, write a complete book of the words and it is each line,
and a day to write a diary, and mathematical complete book of exercises to do."
After hearing her answer I am a little consternation, winter vacation in only a
month off, how can have so much homework, but also for second grade
children.
I will be in our school children compared with them, find our school
children is luckier. We only require students to finish winter vacation homework
book, and then make a happy years of China pictorial. Especially happy Chinese
New Year posters produced, it can let the student to understand the traditional
culture, and cultivate their ability, but also let them learn in life, found in
the life, and why not? So that the students didnt feel much homework, at the
same time also can get harvest, so now there are a lot of local education system
needs reform indeed, society needs is to be able to adapt to social development
talent, not only can keep the book a nerd. So these are thought-provoking!
篇11:初中童年的印记日记
全文共 643 字
+ 加入清单有人说童年像一支七彩画笔,给人生添上了浓墨重彩的一笔;还有人说童年像一颗绚丽灿烂的流星,给记忆的星空留下了耀眼的痕迹。但我认为童年更像充满惊喜的糖果,给人生增添了各种各样的味道。
童年有着柠檬糖一般的酸甜。
还记得小学时,我曾经和同学们参加过一个朗诵比赛,班长和副班长在经过老师的同意后,每天利用午休的时间,带着我们去体育馆排练。我至今都忘不了,那时的我们是那样认真,那样努力,在舞台上挥洒着汗水,一遍又一遍地练习。最终取得了全年级第一的好成绩。这段记忆在我脑海中回放时,永远带着柠檬糖一般的酸甜,微酸中夹杂着甜蜜。
童年有着黑巧克力一般的苦涩。
还记得有一次,我对戏剧队的老师和同学们失信了。因为我这个“主角”的“失约”。同学们不能按计划排练,老师当时非常生气。我那时在干什么?玩?“你就为了玩而辜负了十多个人对你的信任?”事后,我不止一次的责问自己。虽然我因此不再失信。但每当我再一次想起这件事,心中总会泛起黑巧克力一般的苦涩,浓醇的味道令人难以忘却。
童年有着棉花糖一般的甜软。
看到保存至今的小礼物时,总禁不住回忆起小时候的朋友期期艾艾的把那些千纸鹤,星星罐送给我时的情境。那是一种抱着小小的期待,又怕朋友不喜欢这份礼物的心情。那是一颗多么柔软的心啊!现在想起来,我的心情就像棉花糖一般的甜软,心里甜滋滋的。
童年有着各种各样的味道。它或甜,或苦,或酸,或咸,但无一例外都值得让人回味。
走过童年的我迈向成熟,我将在人生这一条路上愈行愈远,过去的回忆会让我更加成熟,我将带着它们走向美好的明天。
篇12:初中生成长感悟日记
全文共 691 字
+ 加入清单成长,像一片浸泡在牛奶上的柠檬,分不出是清还是纯。成长,又仿佛是一层朦胧的轻纱,能看到轻纱里的东西却怎么也看不清楚。
回忆——婴儿时候躺在摇篮里,咬着奶嘴,沐浴着阳光,睁开矇眬的睡眼,露出甜美的笑容。看着妈妈不在我身边,连忙用幼稚的声音一个劲得叫”妈妈!妈妈!“。上幼儿园啦,每当爸爸送我上幼
儿园,我总得”哇——哇“哭上一阵,最后还是乖乖的进教室,幼儿班毕业时,感觉自己好伟大,好自豪,我终于长大了,能上学了。走出幼儿园时我竟没有丝毫留恋。小学一年级,与陌生的同学、老
师慢慢认识、了解,是件多么快乐的事。想当初,我认识第一个朋友的时候,高兴得恨不得买10根棒棒糖一口气吃完。
成长的滋味究竟是什么?是甜?还是涩。幼儿时代,陪伴着我的是糖,棉花糖,入口就融化的甜。再大些,伴随着我的便是棒棒糖,一圈牛奶一圈水果味的棒棒糖,是一种循环了又循环的甜。现在的
我,甜、酸、涩,似乎成了我成长中的三部曲,而恰似这种滋味的,是柠檬茶。
加了糖的柠檬茶,甜中带酸,酸中带甜,似乎也像是成长中的成功与失败。不管是成功或是失败,过程永远是辛苦的。没有勤奋地学习和钻研,就不会有成功。一张张奖状,便是我努力过地证明。
其实我认为,成功、失败,都是一样的,最后都是喜悦,都是甜。
柠檬茶的味道,发涩。虽然涩是我最不喜欢的滋味,但在我的成长中,却少不了它,那就是泪水。泪,有喜悦的泪,懊悔的泪,委屈的泪。小鸟有了翅膀,才学会了飞翔;鲜花有了花香,才学会了
芬芳;我们有了挫折,才学会了成长。哭泣,是一种不满,是一种发泄吗?我无法找出正确的答案。
点点滴滴的回忆,永远叙述不完的成长的滋味,只有自己才会不厌其烦慢慢地品味……
篇13:英语日记带翻译
全文共 370 字
+ 加入清单Next week I would like to go to Kaifeng and parents。 Kaifeng has many great
snacks, such as steamed buns, sesame seed Gaul。 Kaifeng also on the famous
Qingming River Park, I think it has to be very beautiful。 My parents will be
opened to see my uncle and live in his house one night。
翻译:下周我要和我的父母去开封。开封有许多十分棒的小吃,比如小笼包子、高卢烧饼。开封还有著名的清明上河园,我想那必须十分的漂亮。我和我的父母将会在开封见到我的叔叔,并住在他家一晚。
篇14:英语日记100词
全文共 573 字
+ 加入清单Though my daily life is extremely monotonous, I try hard to adapt myself to
it. Why? Because I intend to be a good student. I wish to render service to my
country.I get up at six o’clock every day. After I wash my face and brush my
teeth, I begin to review my lessons. I go to school at seven o’clock.After
school is over, I return home. We usually have supper at seven o’clock.Then I
begin to do my homework. I want to finish it before I go to bed.
虽然,我的日常生活十分单调,但我却竭力设法去适应它。为什么?因为,我打算做一个好学生,希望将来为国家服务。我每天六点起床、洗脸刷牙后,就开始复习功课,七点钟我就去上学。放学后,我就回家了。我们通常在七点钟吃晚餐,之后我就开始做家庭作业,希望在睡觉前把它做完。
篇15:有关国庆节小学英语日记
全文共 991 字
+ 加入清单We had a small debate yesterday in politics class, which made everybody laugh. Wang Yongbin in our class is funny. He said with a crooked neck, "please state your opinion in opposition." It looks very serious! The opposite students grabbed the handle of our classmates, so Liu Yang, our mathematics class, said immediately: "the student said that dreams and dreams are opposite to reality." The teacher and his classmates laughed.
There was a counter student, Zhang Yijun, who said that he helped us in the opposite direction. Fortunately, the teacher reminded him in time to correct it. Yu Miao, a counter student, said, "dont you think its hard to learn before the end of the semester?" So I interposed, "because we know that we have passed." The students applauded immediately. Every time when our fellow students spoke well, Mu Deyu said at the bottom, "brilliant, really brilliant!" We said, "why dont you go up and say it?" He said, "Im stage fright." This debate is really interesting!
篇16:杰出的女性初中英语作文
全文共 1058 字
+ 加入清单Marie Curie, as a distinguished female scientists, In eight years time, and just 3,000 were of two different disciplines on the highest scientific crown -- Nobel Prize and the Nobel Prize in Chemistry.
No one has admitted she let such a beautiful and delicate woman to bear the cross of science,and she is going without looking back, in the history of mankind and left their names be eternal. Marie Curies life for the contribution it has made remarkable man. As a great woman, she has won the love and admiration for the people of the world.
However, she refused lifelong wealth, the honor and regard with indifference. She naturally behave but not disclosed to bear fruit, and she has not taken any of the fish for fame, neither helpless. Marie was born with the quality: unwavering character, intellectual perseverance; know all contributions to the spirit of self-sacrifice and not accept any benefits; success is not particularly proud of, scourge can bend the very purity of the soul. Shes all that. Her colorful life than work, or even more commendable.
篇17:2024年初中生开学第一周日记600字以上
全文共 616 字
+ 加入清单开学第一周,通常都是我们学习热情最高涨的一周,在这一周里,我们会把所有对新学期的期待都表现出来,直到我们遇上学习的难题。
“快教教我,这题我不会!”同桌一改从前不爱学习的模样,拿着今天的作业题问我怎么做。要像以前的他,早就背着书包拉上他的好兄弟去打球了,这就是开学第一周的魔力,总能让那些不爱学习的同学都爱上学习,也总能让我们这些爱学习的学生,在一片世界将因为学习而改变的美好里,耐心教着他们做题。
这样的情况,持续了好几天。到底是几天,其实也就四天。但这四天已经可以让人谢天谢地了,毕竟“三天打鱼两天晒网”的没有耐性,还只有三天。在第五天的下午,也就是开学第一个周五的下午,有着周末的诱惑,同学们的内心又开始蠢蠢欲动了。
“哎呦,又不想做了,不然还是留着周末再做吧!”我的同桌又露出了他的原形,将开学第一天对我发过的誓言“我要天天写完了作业再回家!”忘得一干二净了。此时的他,又摆出了一副学习有什么意思的表情,让我这个同桌不知道该叹气好,还是骂他好。
就在我差点儿就要开口骂他时,他把作业本一合,以最快的速度将书本装进了书包里,对着我笑嘻嘻地说:“你可以回家了,不用管我的学习了。我要去打球了!再不去活动活动,我肯定得憋死了!”我的开口,忽然就只能是叹息,为他的现在叹息,也为他的未来叹息。
开学第一周,只需要不到五天的时间,那些不爱学习的同学就会将他们对新学期的期待都抛到脑后,而我们这些爱学习的同学,则望着难以改变的世界,继续埋头学习。
篇18:国庆节初中英语
全文共 1370 字
+ 加入清单在2017年10月1日,我终于亲眼在电视上看见了国庆阅兵仪式,当胡锦涛同志乘坐检阅车缓缓地驶向受检时,他亲切而又不停地向战友们问好:“同志们好!同志们辛苦了!”
从我懂事起,我还第一次收看这么雄伟壮观的阅兵仪式,那一排排整齐的各种各样方队,有空军,海军等,迈着铿锵有力的步伐从天安门走过;那一架架飞机编队从天安门上空飞过,划出了一道道美丽的彩虹;那一辆辆汽车载着各种各样的先进武器,像一个个威严的战士排着整齐的队伍展现在人们的眼前。
我的祖国已度过68华诞,我作为一名少先队员,在祖国那么美好又伟大的大家庭里,我要加倍珍惜每一分钟,奋发学习,努力成为栋梁之才,为祖国更加美好的明天贡献出自己的力量。
我想对我们伟大的祖国说一句我一直藏在心里的话:“祖国我们为你骄傲,自豪!”
On October 1, 2017, I finally saw the National Day parade on television, and when President Hu Jintao took the review vehicle slowly toward the inspection force, he greeted his comrades and helplessly to his comrades: "Comrade "Comrades are so hard!"
From my sensible, I also watched such a magnificent military parade for the first time, the rows of neat rows of squads, the Air Force, the Navy, etc., walked by sonorous and vigorous pace from Tiananmen Square; The plane fleet flew over Tiananmen Square and set off a beautiful rainbow; the car carrying a variety of advanced weapons, like a majestic warrior row of neat teams show in front of people The
My motherland has spent 68 birthday, I as a young pioneer, in the motherland so beautiful and great family, I want to cherish every minute, work hard, and strive to become a pillar of the better for the motherland tomorrow Contribute to their own strength.
I would like to say to our great motherland that I have been hiding in my heart: "The motherland we are proud of you, proud!"
篇19:初中英语日记美好的一天
全文共 527 字
+ 加入清单A Fine Day——《美好的一天》
June 13th Friday
It is a fine day today. There are some clouds in the sky, but the sun is shining. Mr Jones is with his family. They are walking on the bridge. There are some boats on the river. Mr Jones and his wife are looking at them. Sally is looking at a big ship. The ship is going under the bridge. Tim is looking at an aeroplane. The aeroplane is flying over the river.
译文:美好的一天
今天,天气晴朗,空中有少许云朵,天阳在照耀着。琼斯先生和他的家人在一起。她们在桥上走着,河面上有几艘小船,琼斯先生和他的夫人正看着它们,莎莉正看着一艘大船。它正从桥下经过。蒂姆在看着一架飞机,这架飞机正从河上空飞过。
篇20:短篇英语日记带翻译
全文共 379 字
+ 加入清单The end of the summer, should have a good rest! But my mother is very busy.
As the daughter of course I want to help my mother to do some. Early in the
morning I got up, washed the dishes, sweep the floor, cooking and so on, at
noon, I tired, lying on the bed, fan fan, more comfortable.
译文:终于放暑假了,应该好好歇歇了!可是妈妈很忙。作为女儿的我当然要帮妈妈分担些了。一大清早的我就起来了,帮妈妈洗碗,扫地,做饭等等,到了中午,我快累死了,往床上一躺,扇扇电风扇,舒服多了。