This MF book is apart of the Magic Tree House Series. This book was about the adventure of Jack and Annie climbing into the magig tree house and ending up in Africa where they met some interesting gorillas and communicating through sign langauge. This would be a book for IR . https://www.mthclassroomadventures.org/application/files/4114/8604/9857/mth-26-l... provides lesson plans for teachers when using this book.