With a broad array of innovative print and technology resources, Glencoe "Earth Science" helps teachers differentiate and accommodate all learners. The range of labs, content area reading, discussion strategies, note-taking tools, and activities provides students with multiple experiences of each Science Benchmark. They give teachers flexibility and the ability to monitor student progress through ongoing assessment.
I'm not sure why good reads says this is an unknown binding - it's a hardcover.
This book is fine but much better have come out since its publication. I'd recommend selecting something else if you're picking out a middle school Earth Science textbook.