Why preview a textbook???

I often hear students whine and ask, "Why do I have to look at the chapter first? My teacher will go over this."
Textbook previewing strategies allow us to gain a content overview and provide us a purpose for reading, generate background knowledge,  connect this information to what we already know, focus on what's important, and, most importantly, gain new information. LDonline has a plethora of information. Visit them /http://www.ldonline.org/article/39881/39881/.