My kiddos loved these 3 books! We read them when they first came out, and recently began reading the series again. They have just the right amount of history to give you an interest and a bit of knowledge in the subject, and the reading level is perfect for my 3rd graders. This is my kids favorite book series and it's awesome that you can get them in a 3 pack now. We always eagerly await the next in the series. I highly recommend reading them in order!