Mình thấy có video này dành cho các bé từ 3 - 6 tuổi xem rất hay. Các mẹ có thể xem đoạn giới thiệu bằng tiếng Anh nhé: The Way Things Work - Musical Instruments In Musical Instruments, inhabitants of Mammoth Island invite a visiting inventor to a concert of mammoth proportions! Instead of playing instruments, the islanders rely on musical mammoths for entertainment. After the performance, which includes a rather dangerous stampede, the inventor shares what he knows about musical instruments with a young islander named Olive and her friends. Sound waves of different frequencies result in different pitches, and instruments of those different pitches are combined to produce music. The islanders learn the principles behind various wind, string, brass and percussion instruments and the various sounds they produce. And the result is music to their ears! Đây là link: http://ifile.it/23sn49j/The Way Things Work - Musical Instruments.rar
The Way Things Work - Inclined Planes In Inclined Planes, inhabitants of Mammoth Island have decided to smash boulders into bits by dropping them off a wooden tower to make gravel for their new roads. While this method does produce gravel, the islanders find it is difficult and even dangerous to hoist boulders up the side of a tower. A young islander, Olive, suggests that they roll the boulders up a ramp instead of hauling them up the tower, and proves that it takes less effort to roll the boulders up an inclined plane, thereby allowing them to get the job done more easily! Grades: 3 to 6 File size: 112 MB File type: AVI Link down: http://ifile.it/xjrfmak/The Way Things Work - Inclined Planes.rar
