The Ecco! series treats student motivation, engagement and enjoyment as vital for successful learning. Teachers will also value the imaginative approaches, cultural authenticity, updated educational principles, logical sequencing, ease of use and practical support of the Ecco! series. The Ecco! series is devised for the first four years of secondary school.Ecco! uno is intended for three semesters' to two years' work.Ecco! due is more advanced and is intended for two years' work.