Deep in the rainforest, there is much to behold! Follow Jack and Annie as they embark on yet another mission with the Magic Tree House to search for a way to help the mysterious "Morgan." I really like how not only is there a sense of adventure, but young readers can also feel an atmosphere revolving with mystery. Readers can try to locate clues along the way to potentially join the sister and brother pair in their journey, but will they make it out alive? 
- @Siri of The Hamilton Public Library's Teen Review Board

So very earnest. So very full of simple stereotypes. So very well plotted and characterized that I can see why this has remained the most popular beginning chapter book series since I started in the business almost fifteen years ago.

Young siblings Jack and Annie find a mysterious box that they use to travel through time and space, often aided by they box's powerful, magical owner. That's right, in its most basic form the series is Doctor Who for 6-8 year old readers (which has been popular enough to become one of the longest running TV shows of all time). Older Jack (8) is the cautious, studious one who wants to learn before leaping; Annie (7) is the optimistic one who rushes right into everything. It's a perfect combination to establish a balance of adventure and education, with just a touch of tension between them. The tree house's owner provides the mystery.

(This review is for the audio of books 1-8, listened to in immediate succession.)

I liked this book because jack and Annie went into time and a monkey gave them a mango and they went home

I like this book because the monkey surprised Jack and Annie,