The middle class recognizes the order of the shape teaching planThe following is a lesson plan for the middle class to recognize the order of shapes:
##1. Activity Target
1. To stimulate children's interest in shape cognition and cultivate children's preliminary observation ability.
2. Guide children to recognize common shapes, such as triangle, circle, square, etc., and accurately name the shapes.
3. Let the child perceive the different characteristics of the shape and prepare for the shape ordering.
##2. Event preparation
1. A multi-media class that contained pictures of various shapes.
2. Different shapes of teaching materials, such as triangular blocks, round cards, square boxes, etc.
3. Children could manipulate materials, such as paper, scissors, glue, etc. with different shapes printed on them.
##3. Activity
###(1) Introduction
1. Using the multi-media class to show some interesting patterns made of simple shapes, such as a house made of a triangle and a square, a car made of a circle and a rectangular, etc., to arouse the interest of the children and ask: "Children, can you find anything special in these beautiful patterns?" Guide the child to observe the shape.
###(2) Understanding the shape
1. Take out a triangle object and guide the child to observe its characteristics, such as three sides and three corners. Tell the child that this is a triangle and let the child touch it. Then, he showed the triangular pattern in the class to deepen the child's impression.
2. Using the same method, introduce a circle (no corners, a closed figure surrounded by curved lines) and a square (four sides of the same length, all four corners are right angles).
3. The children were organized to play games, such as 'Guess the Shape'. The teacher described the characteristics of a shape and asked the child to guess what shape it was.
###(3) Exploring the shape sequence
1. On the blackboard, the shapes were displayed in a certain order, such as triangle-circle-square-triangle-round-square. The children were guided to observe and ask,"Children, look at how these shapes are lined up?" Children are encouraged to discover the pattern of the shapes.
2. Let the children try to sort the shapes with the real objects in their hands. They can freely create the order. Then, ask the children to show their own sorting results and explain to everyone.
###(4) Practice
1. The children were given operating materials and asked to cut out different shapes on the paper. Then, they would sort them according to their own ideas and finally glue them onto another piece of paper.
2. The teachers would tour around to encourage the children to be creative and provide appropriate help to the children who had difficulties.
###(5) Summing Up
1. Review the shapes and the order of shapes with the child.
2. Children are encouraged to look for objects of various shapes in their daily lives.
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Big shape, no shape, elephant, no shapeIn traditional culture, as mentioned in the Tao Te Ching, Chapter 41," Great sounds are rare, but elephants are invisible." It meant that the most beautiful music sounded lonely and silent, and the tall image could not be seen. This concept reflected the Taoist understanding of the nature of things. Truly great and grand images or things often exceeded the definition of shape and form in people's conventional cognition. They were a kind of metaphysical and abstract existence.
In addition, there were other levels of interpretation of the " invisible elephant ". From the point of view of an elephant, an elephant was huge and powerful, but its existence was not only reflected by its size and strength. Its existence could be felt through symbolic meaning. In Asian culture, elephants were regarded as mascots, symbolizing strength and wisdom, not only because of their size and strength, but also because of their wisdom and gentleness. From a historical and cultural point of view, in ancient India and Southeast Asia, elephants were used as tools of war and work, as well as for religious ceremonies and celebrations. These historical and cultural meanings deepened the significance of elephants 'existence. In terms of ecological value, elephants were key species in the forest ecosystem. They helped maintain the balance of the forest, promote the growth and reproduction of plants, and protect the habitat of other wild animals, which made the existence of elephants more important and indispensable.
Other than that, there was also a mystery novel and manga titled " The Invisible Elephant."
Elementary school science parachute shape structure function lesson plan reflection middle classThe following is a reflection on the shape, structure, and function of a science parachute in primary school:
** 1. Teaching plan goal **
1. ** Knowledge and Skill Target **
- Let the students understand the basic shapes of parachutes, such as round, square and other common shapes.
- Understand the structure of parachutes, including the canopy, the rope, and the weight (load).
- He understood that parachutes were used to slow down the speed of descent by using air resistance to achieve a safe landing.
2. ** Course, Method, and Target **
- Through the observation of the parachute or pictures, the students 'observation ability will be cultivated.
- The students were asked to make simple parachutes by themselves to train their hands-on operation skills.
- In the process of exploring the relationship between the parachute's descending speed and shape, the length of the parachute rope, the load weight, and other factors, the students 'scientific inquiry ability was cultivated.
3. ** Emotions, attitudes, values, goals **
- To stimulate students 'curiosity and desire to explore scientific phenomena.
- Cultivate the students 'teamwork spirit, such as in the process of group production and exploration.
** 2. Teaching plan content **
1. ** Part of the import **
- They could show a video of a parachutist parachuting or show the actual parachute to arouse the students 'interest. They could ask the students if they knew what it was and what it was used for, thus leading to the theme of the parachute.
2. ** Knowledge Explanation **
- ** Shape Section **: Showing pictures of parachutes of different shapes, such as a circular parachute that looks like a large disc, a square parachute that has a regular quadrilateral shape, etc. Explain the characteristics of different shapes of parachutes in terms of aero dynamics. For example, a circular parachute has better stability, and a square parachute may have some advantages in controlling the direction.
- ** The structure part **: Use a parachute model or a self-made simple parachute to introduce the structure of the parachute to the students in detail. The surface of the parachute was the main part that withstood air resistance. It should be emphasized that the size of the surface of the parachute would affect the size of the air resistance. The rope connected the surface of the parachute to the heavy object, which played the role of transmitting power. The heavy object was the object that was carried by the parachute, and the weight of the heavy object would also affect the descent speed of the parachute.
- ** Function **: Through a simple experiment, such as throwing a small object with a parachute and a small object without a parachute from the same height at the same time, let the students observe their falling situation and intuitively understand the effect of the parachute using air resistance to slow down the falling speed. It could further explain the important applications of parachutes in military, aerospace, emergency rescue, and other fields.
3. ** Practicing Operation **
- The students were organized into groups to make simple parachutes. Materials such as plastic film (as the umbrella cover), cotton thread (as the umbrella rope), small heavy objects (such as small beads or small clips), scissors, etc. During the process of making the umbrella, the students were given instructions to remind them to pay attention to the shape of the umbrella surface as much as possible and the connection of the umbrella rope as firmly as possible.
- Carry out an inquiry activity to let students explore the influence of different factors on the descent speed of parachutes. For example, changing the size of the parachute, the length of the parachute rope, or the weight of the heavy object, releasing the parachute from the same height, observing and recording which parachute descended faster and which descended slower, and trying to analyze the reason.
4. ** Summing Up and Extending **
- Let the groups report their findings in the exploration activities. The teacher summarized and emphasized the relationship between the shape, structure, and function of the parachute.
- The expansion section allowed students to think about what factors needed to be considered if they wanted to design a parachute that could stay in the air for a longer period of time or accurately land at a designated location. This would stimulate students 'interest in further exploration.
** 3. Reflection on lesson plans **
1. ** Success **
- ** Invigorating interest **: Through the introduction of videos or physical objects, the students 'interest was fully aroused. They showed high enthusiasm for parachutes and actively participated in subsequent learning activities.
- ** Practice **: The effect of students making simple parachutes and carrying out exploration activities is better. During the production process, the students not only trained their hands-on skills, but also improved their teamwork through cooperation and communication. The inquiry activity allowed the students to experience the process of scientific inquiry and cultivate their ability to observe, analyze, and conclude.
- ** Knowledge Understanding **: Through intuitive experiments, physical displays, and explanations, the students have a deeper understanding of the shape, structure, and function of parachutes. Most of the students can accurately answer relevant questions and use the knowledge they have learned to analyze them in the inquiry activities.
2. ** Inadequacies **
- ** Time Control **: Due to the individual differences of the students, some groups spent more time making parachutes and exploring activities. As a result, the final summary and expansion were a little rushed, and the students were not given enough time to express their thoughts.
- [In-depth Exploration]: For some students who have the ability to learn, the depth of the exploration activity may not be enough. For example, when exploring the complex relationship between parachute descent speed and multiple factors, these students could be further guided to conduct more in-depth analysis and research.
- [Safety issues: During the experiment of releasing parachutes from a high altitude, although the height is not high, there are still some safety risks. For example, students may fall if they are crowded around.]
3. ** Modification measures **
- [Time Management: In future lessons, predict the production and exploration abilities of each group in advance and allocate time more reasonably.] Time reminders could be set to ensure that each segment could be carried out smoothly. In addition, students would be given enough time to communicate and share in the summary and expansion sections.
- ** Layered teaching **: For students who have the ability to learn, you can provide some expansive questions or guide them to carry out more in-depth experimental designs, such as exploring the landing conditions of different shapes of umbrella surfaces under different wind directions, etc., to meet their learning needs.
- Safety assurance: Before the experiment, emphasize the safety precautions in more detail and arrange the students 'viewing positions to ensure the safety of the experiment. At the same time, some alternative methods could be considered, such as using specialized experimental equipment to conduct parachute descent experiments under lower risk conditions.
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Is shape a polyphone?It's a polyphone. The shape word had two pronunciations, which were Zhuàng and Zhuàng. Among them, the original meaning of the word was the shape of a dog, and the specific animal "dog" was used to represent the shape of things. The extended meaning of the word was shape and form. Therefore, it could be said that the shape character was a polyphone character.
The shape of okraThe okra was shaped like a pentagon, and its cross-section was shaped like a star. It had a green appearance and looked like a goat's horn. It was also known as a goat's horn bean or a goat's horn dish. In England, it was also known as the " Beauty's Finger."
The shape of the moonThe English expressions for the shape of the moon were: " in the shape of a full moon "," half-moon shape ", etc.
The novel New Moon is equally exciting. Everyone is welcome to click and read it!
The shape of a peonyPeony flowers are solitary at the top of the branch, with 5 petals or double petals. There were many types of flowers, and the common ones were as follows:
- Single-petaled type: 1 - 3 layers of petals, flowers spread out or half spread out, the middle of the pistil and stamen fully exposed.
- Lotus type: It is the second generation of the single-petaled peony, and it is more ancient.
- Chrysanthemum type: The petals become sharper and finer from the outside to the inside, similar to chrysanthemums, usually with 6 layers of petals.
- [Rose type: Similar to chrysanthemum type, but with more layers of petals and less fine.]
- [Osmanthus type: When it is fully bloomed, it looks like a plate holding a golden osmanthus from a distance. Generally, there are 2 - 3 layers of petals.]
- Crown type: Similar to the tortoiseshell type but more complicated, the petals are layered like a crown.
- Golden ring type: 2 - 3 layers, the stamens in the middle of the flower suddenly grow up, the surrounding stamens are normal, like a golden ring around the waist.
- Hydrangea: The flower is round and plump, similar to hydrangea.
- The flower is made up of two flowers stacked together, like a pavilion, increasing the degree of double petals and ornamental value.
- The shape of the building is like a building, with one floor and one floor.
" Fairy Dream of Tang Shi: Fate of Peony " is equally wonderful. Everyone is welcome to click and read it!
The shape of the azaleaAzalea branches are many, slender and dense. The leaves were thin, leathery, and gathered at the tip of the branch. They were about 1.5 - 5cm long and were oval, obovate, or oval in shape. The leaves were dark green, and some varieties were shiny. The flowers were triangular and bloomed from April to May. They were long funnel-shaped, with 2 - 3 clusters on the top of the branches. The flower stalk was about 8mm long. The fruit is ovoid, 1cm long, densely covered with strigose.
The novel "Acanthus Flower Blossoms" is equally wonderful. Everyone is welcome to click and read it!
The shape of a crowFrom a biological point of view, there were 25 species of crows under the Corvinus family, and 122 species of crows under 23 genuses. There were 27 species of crows in China, and different species of crows had different appearances. For example, the large-mouthed crow was 57 centimeters long and was a thick medium-sized crow. Its head and beak were thick from the side, and its forehead and beak base were at right angles. The small-mouthed crow was 45 - 50 centimeters long and was similar in size to the large-mouthed crow, but its head was smaller and its beak shape was sharper. The bald crow was 47 centimeters long and looked like a small-mouthed crow, but its body was more slender. When it stood, the length of its wings was the same as the length of its tail. The adult bald crow had no nose feathers around its upper beak and nostrils, and the base of its upper beak was grayish-white. Red-beaked mountain crows were a mountain species. Generally speaking, the feathers of crows were mostly black, but not all crows were pure black, like the white-necked crow with a snow-white neck. Some crows, except for the top of their head, the back of their neck, and the side of their neck, had other upper body feathers with obvious metallic luster, which appeared blue, purple, or green. The luster of the flying feathers and tail feathers was blue-green when observed in front or side light. The luster of the abdominal feathers was slightly dimmer than the luster of the back. From a cultural point of view, the raven character in the Japanese manga " King of the Sea " was bald, with a beak-shaped loudspeaker in its mouth and wearing a black feather coat.
"The Crow's Testimony" is equally exciting. Everyone is welcome to read it!