This book is great for older elementary kids. Tells his life, but it takes one through the vocabulary and the kinds of scientific knowledge needed to really make it a fun and interesting read. One can see a whole different world through the microscope now. There was good balance between the words and the art work making it a fun read as well. Good for a school project or just learning about the scientific method. Lori Alexander deserves her recent "Nobel" of children's literature prize for this book.