An airplane can travel at a speed of 400kmph to 9000kmph.
Brazil has recently gone through changes in school grades. Currently, at the age of 6 children attend from the grade 1 to 4 what is called Ensino PrimÃ¡rio (Portuguese for Primary Teaching, or Primary School), and afterwards from grade 5 to 9 the Ensino Fundamental (Fundamental Teaching/School).
Primary education includes: 1  Pre-school with two levels of one year: pre-kindergarten and kindergarten. 2  Primary or Elementary School: This level lasts for six years, and it is for kids between six and 12 years old. 3  Secondary School: For children between 12 and 15 years old.