Why do prereading strategies that activate prior knowledge and raise interest in the subject prepare students to approach text reading in a critical frame of mind?

Required Texts and Materials
1. Vacca, R. T., Vacca, J. L. & Mraz, M. (2014). Content area reading Literacy and
learning across the curriculum (11th ed.). New York: Allyn Bacon.
Preparation (i.e., Reading): Vacca Chapter 6: Activating Prior Knowledge and Interest
Assignment(s) Due: 1. Reader Response #9
Answer the following questions using at least two citations from the Vacca text:
1. Why do prereading strategies that activate prior knowledge and raise interest in the subject prepare students to approach text reading in a critical frame of mind?
2. What is the value of student-generated questions, and how might teachers help students ask questions as they
read?