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Some hints regarding writing it can be

"Science Fair- "Where Curiosity and Fun Interacts"

2 days exhibition

held in school play ground

themes- science and society, transport and communication, education and information, space, etca

large number of students participated

Mayor was  invited as chief guest

description of the models- solar system, volcanoes, rain water harvesting, etc
prize distribution,

Interesting points about first second and third prizes