Your textbook has a lot of extra material that you can access online. Here's how to get to some of it.
Worksheet for Grades 6 & 7 - Worksheet for Grade 8
Bon Voyage! Student Center - Site Map
This page has chapter-by-chapter activities: eGames, self-check quizzes and WebQuests
Online Student Edition - you need a password to go here
There are lots of great audio and video files here, but you have to go through a few steps to get there. Once you land on this page, here's what to do