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 move to the next class at the end of each school year. Children from about 12 to 18 years attend a post-primary school. Post-primary schools include secondary schools, vocational schools and community and comprehensive schools. Post-primary education is also referred to as second level education.