World English is a four-skills program which uses lively and compelling content, images, and video to teach the language that learners need to succeed in their classrooms and daily lives. The series is built upon clear and practical learning goals which are presented and practiced through motivating themes and topics. World English uses real people, real places, and real language to connect English language learners to the world. 

Published by National Geographic

this aplication available 96 leasen in 4 level of world English such persian translate and sound .