Principle #4: The teacher understands and uses a variety of instructional strategies to encourage students' development of critical thinking, problem solving, and performance skills.

As a teacher I need to be able to teach my students about the affective domain.  It is important that my students can voice their opinions on subjects.  Students encounter problems everyday of their lives.  It is important that problem solving be a part of the classroom because it will help students learn how to deal with their problems effectively.