Though some teachers use Learning World because of its catchy chants and fun tunes. Chants, words or listening tests are not enough for kids to talk fluently.
Training them for Eiken qualification allows students to pass the exam as their knowledge improves with the chants. However they still need continuous activities to get to the point where they can explain what they want to say. It is one of the most important contents for English education. Please do not skip the activities and spend 15-20 minutes on them.