In addition to exploring students' religious beliefs, family relationships, and personal attitudes, surveys can be used to change students' world view. The following statements are from a survey that has appeared in the elementary grades in Pennsylvania's Ligonier School District. Students must decide whether each of ten statements is a fact or opinion. A note to teachers at the top of the survey suggests that "The statements on this page can be used as discussion questions to encourage critical thinking on the part of your students."

Ed. Note: The answers the school district considers to be correct are in parentheses.

1. No animal should ever be killed. (Opinion)

2. Poaching is illegal. (Fact)

3. A zoo is the best place for endangered animals. (Opinion)

4. Trees are sometimes cut down to build houses. (Fact)

5. The snow leopard is an endangered animal. (Fact)

6. It is more important to save elephants than pythons. (Opinion)

7. It is okay to kill an animal if you are going to eat it. (Opinion)

8. Water and air pollution have caused some animals to become endangered. (Fact)

9. People are more important than animals. (Opinion)

10. One reason Giant Pandas are endangered is their limited diet. (Fact)