Hanoi student wins national prize of UPU letter-writing competition 2022
The letter will be translated into French before being submitted to the UPU in Switzerland.
The letter will be translated into French before being submitted to the UPU in Switzerland.
Hanoi’s authorities said once infections reported, classes would be closed for the safety of schoolchildren.
To secure the medals, the student has surpassed hundreds of competitors from nearly 100 nations and territories.
The International Mathematics and Science Olympiad is an annual competition for students under the age of 13 worldwide to promote their interest in mathematics and science.