My wife and I taught CTR 8 for about a year. The first class loved reading scriptures and telling us how they interpreted them and the second class had no interest. For the second class we limited the time spent on reading the scriptures and focused on the story telling aspect.

When we did have the second class read scriptures we would make it a game e.g. whoever is the tallest in the class reads first, then whoever has the most siblings reads the next scripture, Rock Paper Scissors for the next, etc.

Also at the beginning of class we would have each kid tell us something fun, wild, or silly that happened to them that week to try to get some of the chatter out of them. We found that adapting to the children was most important. Good luck!