Product Name: The Big Dipper

Item Number: K0514

Packaging: Packaging bags

Product size: 15.5*12*13 CM

Box loading quantity: 200 PCS

Box specifications: 60*55*45

The Big Dipper is composed of seven stars: Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang and Yaoguang. The ancient Han people associated these seven stars and imagined them as the shape of a ladle for scooping wine in ancient times.
Tian Shu, Tian Xuan, Tian Ji and Tian Quan form the Dou body, which was called Kui in ancient times.
Yuheng, Kaiyang and Yaoguang together form the handle of the dou, which was called "biao" in ancient times.

The Big Dipper is part of the Ursa Major constellation. From a graphic perspective, the Big Dipper is located at the tail of Ursa Major. Among these seven stars, six are of magnitude 2 and one is of magnitude 3. The line connecting the two stars through the mouth of the Dipper extends about five times in the direction of the mouth of the dipper
Then I found the North Star. The Star Recognition Song goes: "To recognize stars, one starts from the Big Dipper and then expands from north to west." Beginners in star recognition can start looking for other constellations from the Big Dipper in sequence. The seven stars in Ursa Major arranged in a spoon shape. Ancient people attached great importance to the Beidou system because it could be used to identify directions and determine seasons.
The four stars, Tianshu, Tianxuan, Tianji and Tianquan, form the "Big Dipper" of the Big Dipper. The three stars in the shape of the handle are respectively - Yuheng, Kaiyang and Yaoguang. The star on the handle of the ladle is called "Kaiyang", and there is a fourth-magnitude companion star named "Fu" 11 minutes away. Kaiyang Star and Fu Star form an optical binary, which can be identified by the naked eye. Kaiyang and Fuxing are also a pair of visible physical stars in the sky, the Big Dipper, which is part of the Ursa Major constellation. From a graphical perspective, the Big Dipper is located at the tail of Ursa Major. Among these seven stars, six are of magnitude 2 and one is of magnitude 3. The line connecting the two stars through the mouth of the Dipper extends about five times in the direction of the mouth of the dipper
Then I found the North Star. The Star Recognition Song goes: "To recognize stars, one starts from the Big Dipper and then expands from north to west." Beginners in star recognition can start looking for other constellations from the Big Dipper in sequence. The seven stars in Ursa Major arranged in a spoon shape. Ancient people attached great importance to the Beidou system because it could be used to identify directions and determine seasons.
The four stars, Tianshu, Tianxuan, Tianji and Tianquan, form the "Big Dipper" of the Big Dipper. The three stars in the shape of the handle are respectively - Yuheng, Kaiyang and Yaoguang. The star on the handle of the ladle is called "Kaiyang", and there is a fourth-magnitude companion star named "Fu" 11 minutes away. Kaiyang Star and Fu Star form an optical binary, which can be identified by the naked eye. Kaiyang and Fuxing are also a pair of visible physical stars in the sky, the Big Dipper, which is part of the Ursa Major constellation. From a graphical perspective, the Big Dipper is located at the tail of Ursa Major. Among these seven stars, six are of magnitude 2 and one is of magnitude 3. The line connecting the two stars through the mouth of the Dipper extends about five times in the direction of the mouth of the dipper
Then I found the North Star. The Star Recognition Song goes: "To recognize stars, one starts from the Big Dipper and then expands from north to west." Beginners in star recognition can start looking for other constellations from the Big Dipper in sequence. The seven stars in Ursa Major arranged in a spoon shape. Ancient people attached great importance to the Beidou system because it could be used to identify directions and determine seasons.
The four stars, Tianshu, Tianxuan, Tianji and Tianquan, form the "Big Dipper" of the Big Dipper. The three stars in the shape of the handle are respectively - Yuheng, Kaiyang and Yaoguang. The star on the handle of the ladle is called "Kaiyang", and there is a fourth-magnitude companion star named "Fu" 11 minutes away. Kaiyang Star and Fu Star form an optical binary, which can be identified by the naked eye. Kaiyang and Fuxing are also a pair of physical objects visible to the naked eye in the entire sky

The Big Dipper appears in different positions in the sky at different times of the night and in different seasons. Therefore, ancient people determined the seasons based on the direction pointed by the handle of the Dipper at dawn: if the handle of the Dipper points east, it is spring all over the world. The handle of the Dipper guides the world to summer. When the handle of the dipper points westward, all over the world is autumn. When the handle of the Dipper points north, winter ensues throughout the land.
The Big Dipper is named α, β, γ, δ, ε, ζ, and η in sequence from the top of the dipper to the end of the handle. Ancient Han Chinese astronomers respectively called them Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang. If a straight line is extended outward from "Tianxuan" through "Tianshu", about five times longer, a star as bright as the Big Dipper can be seen. This is the North Star.

The Big Dipper is part of the Ursa Major constellation. From a graphic perspective, the Big Dipper is located at the tail of Ursa Major. Among these seven stars, six are of magnitude 2 and one is of magnitude 3. The line connecting the two stars through the mouth of the Dipper extends about five times in the direction of the mouth of the dipper
Then I found the North Star. The Star Recognition Song goes: "To recognize stars, one starts from the Big Dipper and then expands from north to west." Beginners in star recognition can start looking for other constellations from the Big Dipper in sequence. The seven stars in Ursa Major arranged in a spoon shape. Ancient people attached great importance to the Beidou system because it could be used to identify directions and determine seasons.
The four stars, Tianshu, Tianxuan, Tianji and Tianquan, form the "Big Dipper" of the Big Dipper. The three stars in the shape of the handle are respectively - Yuheng, Kaiyang and Yaoguang. The star on the handle of the ladle is called "Kaiyang", and there is a fourth-magnitude companion star named "Fu" 11 minutes away. Kaiyang Star and Fu Star form an optical binary, which can be identified by the naked eye. Kaiyang and Fuxing are also a pair of physical objects visible to the naked eye in the entire sky

The position of the Big Dipper in the night sky varies with the seasons. Therefore, the ancient people of our country determined the seasons based on its positional changes. The Ganshi Star Classic states: "The Big Dipper is called the Seven States, the feudal lords of heaven, and also the imperial chariot." The emperor sat on the Big Dipper and inspected the four directions, determining the four seasons and distinguishing between cold and heat. The ancient book 鹖 guanzi records: "When the ladle points eastward, the world is full of spring; When the ladle points south, it's summer all over the world. The ladle points westward, and all over the world is autumn. The ladle points northward, and it's winter all over the world. In ancient times, the northern star was regarded as a symbol, and the Big Dipper was the imperial carriage used for traveling around the world. The year began in spring, and at this time the Big Dipper was in the east, so the inspection started from the east. Therefore, the "Yi Zhuan" states: "The emperor is born of Zhen," and the Zhen hexagram is in the east. [1]
Among the Big Dipper, "Yuheng" is the brightest, with a brightness almost approaching that of first-magnitude stars. "Tianquan" is dim and is a third-magnitude star. The other five are all second-order stars. Near "Kaiyang", there is a very small companion star

It is called "Fu", and it has always attracted people's attention with its beautiful and clear appearance. It is said that when ancient Arabs conscripted soldiers, they used it as a "test star" to examine the eyesight of the soldiers.
The Big Dipper is always in slow relative motion in the sky. Among them, five stars move in the same direction at approximately the same speed, while "Tianshu" and "Yaoguang" move in opposite directions. Therefore, during the long course of cosmic transformation, the shape of the Big Dipper will undergo significant changes. In 100,000 years, we will no longer be able to see this ladder-shaped structure.
The Big Dipper is also commonly referred to as "Beidou". Not far from the northern sky, seven bright stars are arranged in a dipper shape (see the picture). Except for δ (Tianquan) which is a 3rd magnitude star, the other six stars are all 2nd magnitude stars. If you connect the first two stars of the Big Dipper and extend it about five times the distance towards the mouth of the dipper, you can find the north Star, which is often used as a sign to indicate directions and identify constellations. In addition, by extending along the curve of the handle of the Big Dipper and drawing an arc, one will encounter a large horn of 21 bright stars, namely Alpha Bootes.

Technology models mainly refer to land, sea and air models. Science and technology model activities integrate competition, hands-on work and brainwork, and are deeply loved by a large number of teenagers. Their main function is also to cultivate teenagers' comprehensive hands-on skills and high quality. Therefore, at the turn of the century. Under the new form of deepening reform and vigorously promoting quality-oriented education, actively carrying out science and technology model activities is an effective measure to implement quality-oriented education.
Broaden your horizons and enrich your knowledge
Science and technology model activities are rich in knowledge. Take nautical models for example: During the making and navigation of nautical models, students can learn why ships float, how ships maintain stability, why propellers generate power, how ships run fast, why the Titanic didn't sink immediately after being damaged and why it couldn't avoid icebergs... If one delves deeper, students will come into contact with radio-controlled transmitting and receiving machines. Understand (or master) force, density, gravity, pressure, magnetic field, the structure of ships, the structure and principle of engines, radio, the selection of materials... A lot of knowledge. Among them, there is a lot of knowledge that is not in the "textbooks" but is often needed in life. This further inspires students to think about what other technologies are inspired by animals. Can they boldly imagine and make a technological model? Some think of dragonflies and planes, and fish-shaped ones associate torpedoes, etc. Can they also make some simple aircraft models? In this way, students will come into contact with and apply all kinds of knowledge in the science and technology model activities, supplement a lot of book knowledge, broaden their horizons, enrich their extracurricular life, and at the same time learn more knowledge.
Second, cultivate logical thinking ability
The science and technology model activity requires all participants to have dialectical, holistic and strict thinking methods." A sparrow may be small, but it has all the vital organs." The small technological models are large, real cars, ships and planes made in a certain scale. It is an integrated whole, and any slight change can affect the whole.
A model aircraft that remains idle during a competition must go through two stages: high-speed climbing and low-speed gliding. The adjustments during the climbing stage mainly involve the adjustment of the ground tension line and the Angle of attack after the two wings are twisted. Although the position, the installation angles of the wings and the flat tail, and the rudder also have a certain impact on the aircraft's climbing attitude, the changes in these parts directly affect the performance of the model during the gliding stage. Therefore, in the design and adjustment, different force conditions and solutions for these two stages should be considered. For instance, in the design and production of car, ship and aircraft models, great care is taken in the selection of material strength, rigidity and weight, and the best solution is chosen from the two. Therefore, in terms of thinking methods, science and technology model activities require teenagers to be dialectical, holistic and independent. Otherwise, a small mistake can cause the performance of the science and technology model they make to deteriorate or even become unusable.
It can be seen that a person's initial thinking begins with actions. The thinking characteristics of students are mainly in the form of concrete image thinking. Thinking cannot be separated from images and actions. In operational activities, students not only need to look with their eyes and do with their hands, but also think with their brains and speak with their mouths. This organically combines the external operational process with the dialectical, holistic and characteristic aspects in the internal intellectual activities, which effectively promotes the development of their thinking.
Third, cultivate good habits
Science and technology model activities are conducive to shaping students' good personalities, cultivating their strong willpower and pioneering spirit, as well as their meticulousness and patience, and fostering a rigorous attitude towards work, etc.
1. Arrange the time. Students need a certain amount of time and energy to deal with their schoolwork and the cultivation of various interests and specialties. Only by arranging their time reasonably can they be well-organized and busy but not chaotic.
2. See things through from beginning to end. Nowadays, most students are only children. They are afraid of hardship and lack perseverance in doing things, often giving up halfway. If we choose activities that allow them to do things by themselves and think of ways to complete a science and technology model work, their interest will increase even more. Because they all love to play with dynamic toys, from this perspective, it will also help them gradually overcome the inertia in the making process and persevere To complete one's own masterpiece. This thus cultivated in them the habit of seeing things through from beginning to end.
3. Collectivist spirit. The students designed, made and competed together, helping, comparing and learning from each other in the process. This way, the students' sense of collectivism is cultivated. Enable students to have others in their hearts and learn how to get along with others. Only in this way can we create a great cause together with others under the socialist market economy conditions. The days when people like the Curies would shut their doors and boil asphalt are gone forever. Today's society needs the cooperation of a talent group like the Apollo moon landing program to transform the world and create the future.
Fourth, stimulate students' interest in exploring the field of science and technology
A home or an inventor undoubtedly develops a strong interest in the things they love, then explores and studies them, and eventually achieves fruitful results in that field. Nowadays, we make and assemble technological models for students, allowing them to understand the formation of power, the generation of buoyancy, the influence of magnetic fields, etc. This lays a solid foundation for their future research and exploration in this field and sows the seeds of success.
In conclusion, actively carrying out science and technology model activities is an effective measure to implement quality-oriented education and cultivate students' moral, intellectual, physical, aesthetic and labor development, as well as their comprehensive qualities, to become cross-century workers and successors. Actively carrying out science and technology model activities is an effective measure to implement the spirit of the "Several Opinions of The State Council of the Communist Party of China on Strengthening Popularization Work" and the fitness plan, as well as to implement the "rejuvenating the Country through science and education" strategy proposed at the 15th National Congress of the Communist Party of China.