The poster above says: "We must pay greater attention to what we have heard, so that we do not drift away from it." ~ Hebrews 2:1 You can print one of the posters to hang and go with this lesson here.
The words of Scripture call us to listen again and again, and this is a good start to teaching kids the importance of listening. Here are some verses to look up together:
This info comes from Catechist.com and you can visit the site here and find puppets for kids to act out the scene with Jesus, Mary, and Martha to extend the lesson on listening.