{"schema_version":"bf_book_companion_v1","release_id":"20261010T034321Z-reviewed-full-unique-works","book":{"amazon_purchase_url":"https://www.amazon.com/dp/037583222X?tag=bookfrontie00-20","asin":"037583222X","authors":["Mary Pope Osborne","Natalie Pope Boyce"],"book_id":"9780375832222","canonical_url":"https://bookfrontier.com/books/polar-bears-and-the-arctic-9780375832222","cover_image_url":"https://img.bookfrontier.com/9780375832222.jpg?v=debd54569bf5c8e8","description":"The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!! When Jack and Annie got back from their adventure in Magic Tree House #16: Polar Bears Past Bedtime, they had lots of questions. Why is the Arctic so cold? What did the first people of the Artic eat? How do polar bears cross thin ice? What other animals live in the Arctic? Find out the answers to these questions and more as Jack and Annie track the facts. Filled with up-to-date information, photos, illustrations, and fun tidbits from Jack and Annie, the Magic Tree House Fact Trackers are the perfect way for kids to find out more about the topics they discovered in their favorite Magic Tree House adventures. And teachers can use Fact Trackers alongside their Magic Tree House fiction companions to meet common core text pairing needs. Did you know that there’s a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!","forthcoming":false,"isbn13":"9780375832222","publication_date":"20070925","publisher":"Random House Children's Books","slug":"polar-bears-and-the-arctic","subtitle":"A Nonfiction Companion to Magic Tree House #12: Polar Bears Past Bedtime","title":"Polar Bears and the Arctic"},"discovery":{"categories":{"all":[{"bisac_code":"JNF038090","confidence_band":"medium","label":"Polar Regions","score":0.8501,"source":"bisac_hint_model"},{"bisac_code":"JNF003020","confidence_band":"medium","label":"Bears","score":0.8402,"source":"bisac_hint_model"},{"bisac_code":"JUV030120","confidence_band":"medium","label":"Polar Regions Stories","score":0.8144,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"JNF038090","confidence_band":"medium","label":"Polar Regions","score":0.8501,"source":"bisac_hint_model"},{"bisac_code":"JNF003020","confidence_band":"medium","label":"Bears","score":0.8402,"source":"bisac_hint_model"},{"bisac_code":"JUV030120","confidence_band":"medium","label":"Polar Regions Stories","score":0.8144,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"JNF003020","confidence_band":"high","label":"Bears","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF038090","confidence_band":"high","label":"Polar Regions","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF047000","confidence_band":"high","label":"Chapter Books","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Polar Regions","score":0.8501,"slug":"polar-regions"},{"label":"Bears","score":0.8402,"slug":"bears"},{"label":"Polar Regions Stories","score":0.8144,"slug":"polar-regions-stories"}],"reader_fit":["Kids curious about Arctic animals, climate, and life","Young readers seeking nonfiction about a Magic Tree House adventure"],"related_lists":[],"series":null,"similar_books":[{"authors":["Mary Pope Osborne"],"book_id":"9780679883418","cover_image_url":"https://img.bookfrontier.com/9780679883418.jpg?v=ec296d3bc51b6b3e","score":0.9103,"title":"Polar Bears Past Bedtime","url":"https://bookfrontier.com/books/9780679883418"},{"authors":["Mary Pope Osborne","Natalie Pope Boyce"],"book_id":"9780375846649","cover_image_url":"https://img.bookfrontier.com/9780375846649.jpg?v=05dbac83bf81b2ff","score":0.8858,"title":"Penguins and Antarctica","url":"https://bookfrontier.com/books/9780375846649"},{"authors":["Mary Pope Osborne"],"book_id":"9780375802997","cover_image_url":"https://img.bookfrontier.com/9780375802997.jpg?v=a1a3d122ba76c28a","score":0.8122,"title":"Pirates","url":"https://bookfrontier.com/books/9780375802997"},{"authors":["Mary Pope Osborne"],"book_id":"9780375837340","cover_image_url":"https://img.bookfrontier.com/9780375837340.jpg?v=8aa600c4477b5efa","score":0.8005,"title":"Eve of the Emperor Penguin","url":"https://bookfrontier.com/books/9780375837340"}],"topics":[{"evidence_refs":["keyword:non fiction books for kids age 9 12"],"label":"Kids","score":1,"slug":"kids"},{"evidence_refs":["keyword:kids books ages 9-12"],"label":"Ages","score":0.2642,"slug":"ages"},{"evidence_refs":["keyword:arctic animals books for kids"],"label":"Animals","score":0.0688,"slug":"animals"},{"evidence_refs":["keyword:stocking stuffers"],"label":"Stocking","score":0.0526,"slug":"stocking"}],"what_you_get":["Themes: Arctic wildlife, Arctic climate, Arctic peoples.","Themes: Kids, Ages, Animals.","Reading lane: Polar Regions and Bears."]},"llm_signals":{"confidence":0.94,"pacing":"unknown","reader_fit":["Kids curious about Arctic animals, climate, and life","Young readers seeking nonfiction about a Magic Tree House adventure"],"themes":["Arctic wildlife","Arctic climate","Arctic peoples"],"tropes":[]},"source_presence":{"amazon":true,"book_detail":true,"goodreads":true,"llm_signals":true,"similarity_seed":true},"stats":{"amazon_ratings_count":133,"goodreads_ratings_count":486,"goodreads_reviews_count":30,"quality_score":0.9021}}