Algebra Unplugged

I teach algebra at GHS, and I recently ran across a good book to use with algebra students. The book is titled Algebra Unplugged. What I like most about this book is that it provideds answers to questions like "Why to we have to learn Algebra?" and "When will I ever use Algebra?". We all know that students ask these questions all the time. The book also provides a good breakdown for many algebra topics that students struggle with.