Every Prophet that was sent to their nation conveyed the same message: To worship only One God and to repent for their sins. Each Prophet was meant to be obeyed, as they were the bringers of glad tidings as well as a warning to those who rejected the message.
Every time I do a lesson, I try to pick up points that are relevant to tweens. In the updated Prophet Hud (as), you'll see that I added a section on the merits of asking for forgiveness. Knowing the story of each Prophet is something that any young child can understanding. Therefore, it's important to find aspects of each story that might make an impact on their behavior.
Prophet Hud Updated Lesson with Wksht and Presentation by Dessert in the Desert