One of the biggest mistakes in children's ministry is to sermonize everything.  We do a skit, then sermonize it.  We tell a story, then sermonize it.  We have a puppet skit, then sermonize it!!!  By the end of the day, the kids are sermonized out.  The best thing to do is to move directly from one skit to another without sermonizing, then bring it together for your sermon at the end.
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