[DeepL Translation - needs review] The Magic Tree House series is an adventure filled with history, social studies, and science for younger readers. One day, Jack and Annie find a strange cabin in the woods, uninhabited and filled with books, and as Jack looks through a dinosaur book, he mutters a word, and suddenly the wind picks up and the house whirls around, transporting them to a new place. Social studies, science, and history are easily taught alongside the main characters as they trav...
This series will be familiar to a lot of people, but even if you haven't read it before, the books are great for starting to read longer texts while still being accessible for early intermediate learners.
The story follows two siblings who discover a mysterious treehouse filled with books in a forest near their home. To their astonishment, the treehouse has the magical ability to transport them through time and space, and so they end up going on a lot of adventures.
Each volume recounts their adventures to various different countries and periods of history; the stories are longer than those found in picture books or graded readers, but not so long that it feels like a slog (each book is just under 100 pages). This makes them a great stepping stone for those who want to progress beyond beginner material and read books aimed at native speakers.
The language used is straightforward, with common grammar and vocabulary for the most part - each volume's adventure does come with a small amount of vocabulary that wouldn't be considered everyday (in this first volume, it's dinosaurs), but generally there are few unusual words. The grammar is also fairly simple, and there isn't any figurative language or other advanced concepts.
Even for the specialised vocabulary, it is explained in a context that makes it easy to understand (the books are aimed at children, after all), and the words are repeated throughout the story. For example, the dinosaur names may be unfamiliar to the reader, but common words are used to describe their appearance, and illustrations are included.
While children's books may not seem particularly appealing to adult readers, the easy language can be great for the language learner, and the large variety of subject means there's sure to be an adventure that interests you.