In Pulleys, inhabitants of Mammoth Island try to find the best method to lift their mammoths. A young islander, Olive, decides to use a simple machine called a pulley to get the job done. A pulley is a wheel that carries a rope, chain or cable on its rim and can be used to lift a heavy load. And when multiple pulleys work together, they lessen the effort it takes to do work. So, using a ten-pulley system would require one-tenth of the effort of a single pulley to lift a mammoth!
Journey to Kenya for a look at a predator with the undeserved reputation as a petty scavenger. Uncover the misconceptions surrounding the spotted hyena and see how this creature defies them. Then find out why the African lion may not be king of the savanna after all.
English Today - Multimedia Course Intermediate 2 (DVD 10)
English Today is an innovative product for English language learning, designed to gain maximum advantage from the DVD format and aimed at the needs of the target consumer.
English Today - Multimedia Course - Advanced 3 (DVD 20)
English Today is an innovative product for English language learning, designed to gain maximum advantage from the DVD format and aimed at the needs of the target consumer.
It represents a completely new approach: instead of the typical video-lesson structure, a teacher guides the student through a series of narrative episodes arranged as in a sit-com.
