"What children learn about character in the early childhood classroom can shape their character for the rest of their lives. So how do you teach it?" This and other essential topics (e.g., differentiation) are covered in Scholastic's excellent blogs presented by teachers as tips and teaching strategies.
Contains over 1,000 lesson plans in many different subject areas for grades PreK through High School. Many of the lesson plans are created for children in Preschool through grade 3 and are easily accessed at this site.
Each month, have a country picked out. Have a map of the world on a bulletin board and for each month have a string that is attached to your hometown and stretch it to the country you are visiting. For that month, have that as a "theme" and you are able to incorporate science, social studies, and language arts into the lesson.