Focus On Middle School Biology Student Textbook, 3rd Edition (softcover)

This is my favorite science curriculum that I hope to continually purchase. I didn't purchase from Amazon, however, I wanted to write a review. I have 3 out 5 kids that I am currently homeschooling and in my subjects I find it difficult to combine because their levels however this science allows me to do which makes homeschooling overall a little bit easier.