The process of making mathematical teaching aids for the fourth grade of primary schoolThe following is the process of making some fourth-grade mathematics teaching aids:
* * 1. Math Puzzle **
1. Materials: Colored paper, cardboard, etc.
2. Production steps: According to the mathematics knowledge content to be taught, cut out different shapes (such as triangle, quadrilateral, etc.) and colors of puzzle pieces with colored paper or cardboard. For example, if it was about the combination of graphs, he could cut out different types of triangle and quadrilateral, allowing students to intuitively understand the relationship between graphs and mathematical concepts through the puzzle process.
* * 2. Math counting stick (can be used to assist in math calculation teaching)**
1. [Material preparation: You can choose a suitable wooden stick or straw.]
2. Production steps: Cut the small wooden stick or straw into a suitable length. According to the teaching needs, different lengths or colors represent different values. For example, a small wooden stick represents 1, 10 tied together represents 10, and so on.
* * 3. Self-made protractor (made of cardboard)**
1. [Material preparation: cardboard]
2. The production steps were to draw an outline on the cardboard according to the shape of the protractor and mark the scale. One could first find a standard protractor, imitate its scale distribution, and carefully draw the scale lines from 0 degrees to 180 degrees on the cardboard with a ruler and pencil to make a simple protractor.
* * 4. Use the bottle cap to make a small score disc **
1. [Material preparation: Bottle cap.]
2. "Production steps: Clean the bottle cap and divide it according to the score teaching content." For example, if a bottle cap was divided into several parts (such as four parts), different parts could be marked with paint or a marker to represent different scores, such as 1/4, 2/4, etc.
* * 5. Use buttons to represent the decimal system currency (supplementary to the decimal system)**
1. [Material preparation:
2. "Production steps: determine the value represented by the button. For example, one button represents 1 yuan, 10 buttons strung together represent 10 yuan, etc. Different combinations and marks can be made according to teaching needs to simulate the calculation of the decimal currency and other teaching content.
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Jinyiwei's Appearance and CharacteristicsIn the Ming Dynasty movies and television works, the Jinyiwei often wore flying fish clothes with spring knives embroidered on their waists, giving people an image of martial arts strength and supremacy. However, this was only a kind of image creation in film and television works. It could not completely represent the true appearance and characteristics of the Jinyiwei in history. However, from these images, it could be inferred that the Jinyiwei might have unique clothing and equipment to show their special status.
The original novel of " The Shadow of Beacon Burning Plum Fragrance " was " The Hitman's Diary of the Pseudo Song Dynasty." The original plot was equally exciting. You can click on the link below to read the original novel.
2017 Zhejiang Province National Biology LeagueThe 2017 Zhejiang Province National Biology League was as follows:
- In the National Middle School Biology League (Zhejiang Division) competition, Group A (Class I Key Middle School Group) had 38 first prize winners, 194 second prize winners, and 298 third prize winners; Group B (Non-Class I Key Middle School Group) had 77 first prize winners, 384 second prize winners, and 580 third prize winners.
- In terms of the overall results of the National Middle School Biology League, 1 - 61 people won the first prize, 62 - 261 people won the second prize, and 262 - 561 people won the third prize. Among them, the top students were from many schools, such as Xiaoshi Middle School in Ningbo City, Hangzhou Xuejun Middle School in Zhejiang Province, Zhenhai Middle School in Ningbo City, etc. The top three were Zhang Zhiyi.(Total T-value: 73.26113207), Zhu Hu Minhao (Total T-value: 73.1891269), Huang Yueying (Total T-value: 71.71424172)
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Why did Clarins take it off the shelves?According to the information he retrieved, he did not know the reason for Clarins 'removal.
"Qiao Yun" is also a wonderful novel. Everyone is welcome to click and read it!
How to solve the diagonally cracked ceiling in the living room?If the ceiling of the living room is cracked diagonally, the following methods can be used to solve it:
1. ** Basic treatment **: Slit the crack with a blade, leaving a gap of 3 - 5mm wide. Then, caulk it with elastic putty, stick a bandage, and finally repair it with paint.
2. ** Local reinforcement treatment **: The cracked parts can be properly lined up and fixed with nails. Then, they can be stitched with paper tape, and the bottom can be approved with special lacquer. Finally, they can be painted indoors.
3. ** For the treatment of the plasterboard **: shovel off the cement, draw a V shape on the plasterboard, embed it with plaster, stick a bandage, then apply the cement and make the paint; after filling the gap with plaster powder, you can use anti-cracking tape to stick it on the surface. When sticking, pay attention to remove the bubbles, so that the tape and plasterboard are completely tightly combined.
4. ** Pre-treatment methods for auxiliary repair (reference if pre-treatment has not been done)**: Leave V-shaped seams at all joints. Later, the oiler will embed caulking plaster into the joints when it is greasy, and then use kraft paper mesh cloth to treat the surface. Cut the 7-shaped joints at all corners with the whole board cover, and use OSSS board to make 7-shaped joints for reinforcement at the bottom.
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Who are the characters in the novels of the Huo family of the Nine Gates of Rebirth?According to the available information, the characters mentioned in the novels related to the rebirth of the Huo family of the Nine Gates were Huo Xiangu (Huo Xiuxiu's grandmother), Waldoff, and Lin Bufan, who had transmigrated to the warlord era and married into the Huo family.
It should be noted that the information provided by the reference materials is limited, and there may be other characters that are not mentioned.
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The Nature of Reflection and Reflection ArcReflex was a phenomenon of neural activity, and the reflex arc was the structural basis of reflex activity and the neural pathway that controlled reflex.
The reflex arc consisted of five parts: the receptor, the sensory nerve, the reflex center, the efferent nerve, and the receptor. When the receptor is stimulated, it will produce an electrical signal (nerve impulse). This signal is transmitted to the reflex center through the sensory nerve. After the reflex center analyses the sensory signal, it will send out an efferent command to the receptor, causing the function of the receptor to change. The completion of the reflex depended on the integrity of the structure and function of the reflex arc. If any link was damaged or blocked, the reflex activity would not be completed.
In terms of academic research, Descartes proposed the concept of reflex in the 17th century; Pavlov created the science of conditioned reflex after studying digestive psychology in the late 19th century; Charles Sherrington established the theory of neurons in the 1890s; and Kandel discovered the Synaptic Connection between nerves in 2000. These studies continued to deepen the understanding of the nature of reflections and reflection arcs. In vertebrae, most sensory neurons did not enter the brain directly. Instead, they activated the spinal cord motor neurons through the Synapses in the spinal cord to achieve faster reflex movements. At the same time, the brain received sensory input during reflex and analyzed the signals after the reflex movements. The diseases related to the destruction of the reflex arc were myalgia gravis, periodic paralysis, spinal cord damage, and other diseases.
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High Duke's Public House's Second WifeThe following are some recommended novels related to the High Duke's Public House:
- < Xian Guo Gong Fu >: After the female protagonist's parents passed away, she brought her younger brother to the second concubine's aunt's house in the Duke's Mansion in the capital. She had many interactions with the male protagonist of the eldest son. After the death of the male protagonist's first wife, the female protagonist went from being afraid of the male protagonist to gradually understanding his character. The two of them developed feelings for each other, and the female protagonist slowly gained a foothold in the residence. The male protagonist doted on the female protagonist very much.
- "Difficulties in the Second Wife": The female protagonist became the second wife of a thirty-year-old salt history inspector with unlimited prospects. In the early days, there were many fights in the house. In the middle, after most of the concubines passed away, the male protagonist no longer took concubines.
In addition, novels such as " The Second Empress " and " The Second Wife " might also meet the requirements.
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How do you pronounce draw?The pronunciation of draw: English (Dr. ́), American (Dr. ́), the same sound as the cover.
"Choose" was equally exciting. Everyone was welcome to read it!
A must-see romance mangaHere are some must-see love comics:
- "Matsuyo-san wants me to confess ~ The battle of the minds of the geniuses in love ~": The male protagonist Shiroyami-Miyuki and the female protagonist Shishimiya Teruya were the president and vice president of the student council of the Hideki-in Academy respectively. Although the two of them had feelings for each other, they were unwilling to confess first due to their pride, so they launched the "battle of the minds in love" in which the other party confessed first. The work won many awards and was very popular in Japan. The animation was now in its third episode.
- [Takagi the Good at Teasing: Season 3]: It was a sweet but not greasy love story. The production team understood the audience's needs very well. The content was changed but the effect was good. The two-way rush between the fairy tale drama and the ending of the film released the emotions that had been suppressed for three seasons. It was a pure love story without stomachache and harem plots. That kind of young love could move the audience very much.
- "Falling in Love with Dress-up Dolls": A popular new work that was animated for the first time in January 2022, with cosplay as the theme. The grandfather of the male lead, Five Shinjia, was a craftsman of Girls 'Day dolls. When Five Shinjia was young, he fell in love with Girls' Day dolls at first sight. Later, he met his classmate, Kikata Kawai, in the school sewing room and was discovered by her. Kikata Kawai cosplayed the game character he liked but had no talent in making clothes. Under her invitation, Five Shinjia made clothes for her, and the relationship between the two gradually became closer.
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