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).
Children enroll at primary school when they turn five years old. From years 1â6 students attend primary school. In years 7 and 8 students attend intermediate, or a joint school (years 1â8 or years 7â13). The final years of free education are spent in secondary school (years 9â13).