I am using these passages for 5th and 6th grade students, and they are enjoying the material.  I like to find varied short pieces to expose them to since they often stick with just one Genre of their "free choice" reading material.  This book has a nice amount of variety in it and the questions are good at guiding the students back through the writing to find the information.  Clearly presented with easy-to-read font, this has been a great addition to my classroom.