The Magic Tree House series is a great way for younger readers who are newer to chapter to gain confidence in their ability to read. These books are achievable due to being small in length with less words per page, a full page drawing per chapter, and a formula which each book in the series follows which lessens the amount of information a younger reader has to work at comprehending. These books are also good for older English Language Learners to use to increase their reading skills while learning about a part of history, without the books being insultingly young.
This particular book does not teach very much history in the story, compared to some of the other Magic Tree House books, but at the end of the book is a few pages about the Revolutionary War, George Washington, and Thomas Paine that are short, yet very informative in a readable manner. Then it has Jack and Annie's Guide to the 13 Colonies. This is very well done, giving simplified, yet full descriptions of the economies of the 3 main regions of the Colonies, and what life was like in each area. There are also accurately drawn pictures that support what is being described. I think if this book is being used to teach about that era, I would definitely start from the back and then go towards the front.