I am going to teach my 5th graders about the brightness of sun and stars and their distance from the earth. I want to start off by teaching them about the characteristics of stars. Then guide them to realize that a sun is a star. My next step would be to have them explore the distances of the the stars from the earth. Finally, I want them to learn how brightness of the stars is due to their distance from the Earth. All of these resources have rich information about stars, sun, and brightness, and there are several activities that will help the students develop their ideas and knowledge related to the topic of stars and their brightness. All of these items are rich with information related to the topic/theme/ideas mentioned above.