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Roll the A4 paper into a cylindrical shape, the diameter of the circle is smaller than the diameter of the table tennis ball (of course, you can also fold it into a square or other shape, anyway, the area is less than the maximum cross-section of the table tennis ball). Then use label paper to glue the outermost opening of A4 paper.
But I've never seen a label paper as big as 30 square centimeters. If it's really that big, you can tear it 2 halves to increase the area of the adhesive opening.
It reminds me of the days when I played OM in high school. Hahaha.
How many sheets of A4 paper can you use?
Is the higher the height, the better?
If you still have requirements, it's better to be more detailed.
If I could use more than 10 sheets, I would stack them like this:
As a whole, it is necessary to fold a conical shape of one meter.
A4 paper is 21 cm wide and cm long.
First, fold 4 cylindrical shapes with a height of 21 cm, and the cross-sectional area of the stacked cylindrical shapes is smaller than that of each one. Then stack 2 cylinders with a height of centimeters, one of which has a cross-sectional area smaller than the maximum cross-section of a table tennis ball.
Then arrange them according to the size of the cylindrical cross-section, with the largest being placed at the lowest level, separated by a piece of A4 paper between each layer. Label paper is used as a glued cylindrical shape. Remember that the overall shape of your stack is a cone, or tower.
A total of 11 sheets of paper are required, and the height of the stack is 4*21+2*cm. Of course, if you are skillful and skillful, and start from the bottom with centimeters as the height, you can use less paper, or use the same amount of paper to stack higher.
Hope that helps.
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Attach the ball to the edge of the paper with label paper and make a circle of A4 paper.
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The Mind Olympiad is an international activity to cultivate young people's creative filial piety.
1. The Mind Olympiad has been warmly welcomed by the students, and has also received extensive attention and support from all walks of life. The OM Association was established in the United States, with chapters in 49 states and more than 10,000 members.
2. The Mind Olympiad soon spread to Canada, Mexico, and then to Russia, Germany, the United Kingdom, Australia, China, Singapore and other countries.
3. Brain Olympiad Now more than 30 countries and regions in the world carry out this activity, the purpose is to develop the creativity of young people, cultivate their creative spirit and teamwork spirit.
4. The Mind Olympiad encourages the combination of hands-on and brain-moving; science and art combined; The spirit of science is combined with the spirit of humanism.
1. The Olympiad achieves the intellectual development of the majority of young people through competition, and creates opportunities and conditions for a small number of outstanding young people to stand out and become outstanding talents.
2. The Olympiad has been widely carried out in our country and has achieved outstanding results, and students who have obtained excellent results in the Olympiad can be qualified to participate in the independent entrance examination.
3. The purpose of the Olympiad is to popularize scientific knowledge to middle school students, stimulate their interest and enthusiasm in learning science, and provide them with opportunities to communicate and learn from each other.
4. The main task of the Olympiad is to coordinate the competition of the five disciplines, exchange information, study the problems encountered in the process of the competition and the solutions to be solved in the course of the competition.
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In addition, in Shanghai, there are various competitions in the form of individual fiber banquets
1.Ring match.
2.10,000 people fight quietly and challenge.
3.Salon activities.
Most of the three competitions set up the topics of making load-bearing structures, trolleys and mixed types, and the questions will be slightly different from year to year.
There is also a way for all students in each district to go to a school together to compete, around November, which can be counted in the college entrance examination list.
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From September to October, apply to become a member unit, and the member unit can get long-term questions and participate in the competition.
From November to December, coach training and application for competition topics.
From December to February, each team prepares for the competition.
February-March: China Regional Competition (Shanghai).
May-June World Finals (in the USA).
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There is a mysterious area in the arena of the Mind Olympiad that has not yet been lifted and may never be lifted, and it is the arena for improvisational questions. Unlike the long-term competition where spectators are allowed to observe, coaches, parents, journalists, competition staff, and referees who are not the subject of the competition are not allowed to enter the room and area of the impromptu competition. Only the players and referees know what the competition is.
However, it is impossible to get impromptu questions from the mouths of the participating team members and judges, because according to the rules of the competition, the participating team members and referees are not allowed to disclose the questions to anyone before the end of the innovation competition, otherwise it is a violation of the competition rules and will be disqualified from the competition.
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