Nearly 400 students are participating in a science fair that ends Friday There are about 200 separate projects.
The students are from the primary and secondary grades. The event is at the sports facility of the Universidad de Costa Rica, in Sabanilla de Montes de Oca.
The event was inaugurated Wednesday night. The fair is open to the public today until 4 p.m. At the same time judges will be making their evaluations of the projects.
Students form all 27 educational regions in the country are participating in what is called the Feria Nacional de Ciencia y Tecnología.