My school is using the character program Top 20 this year, but the lessons are designed for 3rd grade and up. This is a modified version of Lesson 4, Part 1 in the Top 20 curriculum that I used for my 2nd graders, but I think would work well for K-2, maybe 3 also. The Top 20 lesson title is An Inside Job. I hope this is helpful to you!
Please note that I did not create this lesson. It was made by a friend of mine, so it's not quite the same as the others. I simply posted it so there are no gaps