One sunny spring day, in Darwin's garden, other flowers and plants were just beginning to spread their branches and leaves, and clusters of yellow and white primroses were in full bloom towards the sun. Little Darwin's father likes flowers and plants very much. He carefully tidied up the soft branches and pulled out the weeds that had just emerged. Little Darwin followed him and asked questions.
"Dad, are primroses only available in yellow and white?"
"yes." Dad's answer is simple and affirmative.
"If only there were red, yellow, blue, white and black!"
"Son, that's impossible. What color is this flower? This is given by nature. We can't hope that the flowers can be any color. "
"Yes, I can!" Little Darwin seemed confident. He ran to the shed and brought a watering can. "Dad, that's it. If you want it to blossom, water it with red water. " If you want it to blossom, water it with blue water ... "
Dad was embarrassed by this childish behavior and deliberately said, "Do you want all the colors of the bonus, yellow and blue?"
"That's easy. Just pour several colors together." Little Darwin said, trying to find all kinds of ink to experiment, but his father stopped him: "How can flowers change color?" It's not a bad thing for children to dare to think and say, but they can't do whatever they want, let alone mess around. "
Little Darwin was silent, but he was not satisfied. He thought: I must find a way to make the flowers change color and open a red primrose for my father to see.
One day, my father was fishing by the river. Little Darwin came panting and respectfully presented his father with a bunch of primroses, a bunch of red primroses.
Dad didn't believe it at first, so he looked at it carefully. This is really a red primrose!
He was surprised to ask how little Darwin got it.
"It's very simple. Yesterday afternoon, I folded a bunch of white primroses and put them in a red ink bottle. Today, it turns bright red. " Little Darwin said in a confident tone, "Dad, this is not given by nature. I made it change color. " Flowers absorb water from roots all the time and spread it to all parts of the body. Let it drink red water and pass it on to white flowers, and the flowers will naturally appear red. "
After listening to Darwin's words, my father excitedly raised the primrose in his hand and said, "There is another new primrose in my garden and another red primrose in England!" " "
Teaching plan of "primrose with color change" in the third grade of the second primary school
Teaching objective: 1. Correct confirmation of six new words in reading class, and correct confirmation of the words formed by these new words. Can write new words
2. Understand the content of the text, inspired by Darwin's courage to imagine and practice since childhood, and learn the spirit of dare to think, dare to do and dare to explore.
3. Read the text correctly, fluently and emotionally.
Second, the key points and difficulties
Read the text to understand that Darwin is a child who dares to think, speak and do, and learn his spirit of thinking, doing and exploring.
Third, preparation before class: collect Darwin's information.
Fourth, the teaching process:
first kind
Introduce new courses:
With the blooming of primrose, what we see is the surprise brought by young Darwin who is full of fantastic ideas. Darwin was a British biologist. He wrote a very famous book called the Origin of Species, which was widely circulated all over the world and translated into many languages. He made such great achievements because he was a child who dared to think, speak and do since he was a child. Today, we are going to learn a text about Darwin's childhood story: "Primula that can change color".
Design intention: not only let children know Darwin, but also stimulate their interest in learning new lessons. )
(2) Read the text for the first time and learn new words by yourself.
1, read the text for free. Show me the slides (I can do it):
(1) Look up words you don't know in the dictionary or ask your classmates and teachers, and read them several times.
(2) Meet new friends in the best way.
(3) Tell your friends a good way to read. If you are right, praise him. If you are wrong, help him.
2, self-study feedback:
(1) Display words: arrangement, giving, color, self-confidence, fishing, respect and beauty.
(2) Look it up in the dictionary: overgrown and in full bloom.
(3) according to the appearance, say a few more words. Example: Hongyan
(4) compare with each other to form words:
Stop () fishing () burying () folding ()
Positive () Hook () Principle () Disassembly ()
3. Check the preview effect:
Read the text by yourself, mark the natural paragraphs and think about what little Darwin wrote in the text. (Little Darwin turned the white primrose into red, which is impossible, but little Darwin did it. )
(Design intention: remove the text barrier and pave the way for further study of the text. )
(3) After-class exercises:
1, word combination:
Cluster () Anger () Press () Spray ()
Family () Anger () An () Anger ()
Pour () material () fish () and open ()
Burning () home () hook () dispute ()
2. Write as you look: panting and respectful.
3. Write sentences according to the appearance. Example: Father likes flowers and plants. Darwin's father likes flowers and plants very much.
(1) Primula in Dahl literature.
(2) Spring flowers are in full bloom.
(3) The clouds are floating
4. Read the text aloud.
(design intent: strengthen the practice of basic knowledge such as words. )
Second lesson
(A) communication, the introduction of new courses.
1. Introduce what you know about Darwin.
2. The student's introduction is really good. Darwin was a British biologist. When he was young, he dared to think, speak and do. In his garden, there is a kind of flower called Primula. In spring, clusters of white and yellow flowers bloom beautifully! But Darwin just wanted to add a color to this flower, red. What's going on here? Today, we learn lesson 16 and read the topic together.
Design intention: Introduce new courses closely related to students' own knowledge accumulation, stimulate interest and pave the way for further understanding Darwin. Through the collection, arrangement and exchange of information, students' ability to collect and process information is improved, which will pave the way for further understanding of the text. )
3. Transition: Red primroses can't be found not only in Darwin's garden, but also in England. Will Darwin's idea come true? Please read the text with questions.
(Design intention: Encourage students to read the text with questions and cultivate the good habit of thinking while reading. )
(2) Read the text freely. Requirements: Correct pronunciation and complete sentences.
(3) Read the text carefully and learn from it.
1, Darwin's idea has come true? A good boy who dares to think, speak and do. Now please read the text silently and think while reading: Where can we see that Darwin was a good boy who dared to think, speak and do since he was a child, and draw relevant sentences with "-".
2. Exchange related sentences.
3. Randomly instruct reading aloud.
How did Darwin's father react to his words and deeds? Underline the relevant sentences with "~ ~ ~". What does dad mean?
5. Communicate related sentences and guide reading at random.
6. Practice reading aloud in various forms. Tip: Pay attention to the changes of different words and tones before and after.
(1) Practice dialogue reading at the same table.
(2) Read the text in different roles.
(3) tell the performance of the text.
(Design intention: From the perspective of students' emotions, teachers guide students to really let their hearts enter the text, put their emotions into it, and have affinity with the learning content. Starting from the overall feeling, students grasp the feeling points to analyze sentences, and repeatedly feel and taste in reading, so as to enjoy the influence of language, acquire language and develop a sense of language. )
(4) Summarize the text and start.
1. Accumulate the favorite words and sentences in this lesson into a small notebook.
2. Read other stories about Darwin.
Do you have any fantastic ideas? Try to do it when you go home. Prepare to participate in the exchange and exhibition of My Fantasy.
Reflections on the teaching of "Color-changing Primula" in the third grade of the third primary school
This is a long article for junior three students, and some sentences are difficult to understand. For the teaching of this class, I try to grasp the key content of the article and make the class simpler. In class, I pay attention to creating situations, guiding students to talk with the text, talking with classmates, exchanging reading feelings and understanding the character quality. Secondly, I also pay attention to guiding students to read the dialogue between Darwin Jr. and his father, so as to better understand the quality of Darwin Jr.
(1) Preview the feedback and enter as a whole.
The students previewed before class and collected some graphic materials of primrose. I asked the students to introduce Primula in one sentence. Students not only gave back their extracurricular knowledge, but also naturally gave back what they previewed in the text.
(2) In-depth study, reading and analyzing sentences.
Reading teaching is based on reading, and the reading in this class reflects a certain level. Reading 1 (full text)-Read the pronunciation of sentences correctly, read sentences correctly and read them smoothly. The second reading-silent reading, underline the relevant sentences as required while reading. Students exchange reading, check correct pronunciation and read sentences. Reading for the third time —— Thinking while reading: Why did little Darwin tell his father that it was "not given by nature"? And recite the key sentences and read the sentences well. Read aloud for the fourth time-students read aloud in different forms and read the different tones of father and son in this dialogue. Students will not feel bored if they read it four or five times step by step. At this time, the contents of the text are naturally generated in the students' memory.
In teaching, I pay attention to giving students some space and time for independent thinking and learning. For example, after showing the reading requirements, there must be a pause to let students see the requirements clearly, so as to enter autonomous learning more smoothly. When studying section 1 1- 14 of this lesson, ask students to tell the process of Darwin changing the color of primrose flowers in the third person. What permeates here is the ability of language reporting. Students can understand his practice by getting familiar with the relevant contents of the text, and then introduce this process to everyone. Students will have a learning process from never attending a small meeting to attending most meetings. Therefore, the teaching here is from helping to releasing, using the language of the text, grasping key sentences and mastering the method of reporting in practice. First, read the text by yourself and find what Darwin said to prepare for the later report.
(3) Practical activities, expansion and extension.
The cultivation of students' Chinese ability in Chinese teaching is through students' independent language practice, rather than repeated explanation or practice of Chinese knowledge. The focus of this unit is to stimulate students' interest in the ubiquitous scientific knowledge in life, guide students to do experiments, consult relevant materials and exchange their income with each other, so as to cultivate students' attitude towards life that loves science.