MathMatters（《数学帮帮忙》）系列目前共42册，包括 数字与运算 、 量与计量 、 图形与几何 、 探索规律 、 统计与概率 等内容，几乎涵盖了小学阶段所有重要的数学知识。 MathMatters（《数学帮帮忙》）系列的每一本书都会讲述一个发生在孩子身边的故事，由故事中出现的问题自然地引入一个数学知识，然后通过运用数学知识解决问题。 孩子在主动参与和积极思考的过程中会慢慢发觉，课本上那些既枯燥又抽象的数学知识竟变得如此容易理解和掌握！更重要的是，孩子能深深感受到运用数学知识去解决实际生活中的问题所带来的快乐，从而激发他们学习数学的兴趣，让他们逐渐爱上数学。 这套数学绘本非常适合亲子共读，在阅读过程中，家长可以带领孩子推测情节的发展，探讨解决难题的办法，让孩子在愉悦的氛围中学到知识和技巧。 每个故事后都会用多样的

What was it like to wear armor? What was the food like in castles? This book explores what life was really like in medieval times.

Merlin sends Jack and Annie on a mysterious mission to Paris, France, over a hundred years ago. There they must find four magicians and give them an urgent message from Merlin himself. When Jack and Annie land in Paris, they make their way to the 1889 World's Fair. Below the Eiffel Tower, built especially for the fair, there are thousands of exhibits from all over the world. But how will Jack and Annie find the magicians in the crowds of people? And who are the magicians anyway? Jack and Annie are about to find out in another adventure filled with history, magic, and amazing surprises! In Night of the New Magicians, Mary Pope Osborne brings to life an amazing time in history that gave birth to many startling inventions and scientific discoveries that would change the world forever. The paperback edition boasts all-new backmatter full of activities!

The bestselling, fan-favorite chapter-book series celebratesHalloween with this scarily affordable paperback! Jack and Annie have traveled all over the world in their magictree house. But they've never been anywhere like this. In thedistance, a haunted castle looms dark against the light of themoon. No candles burn in its windows. No laughter rings through itshalls. What has happened to the castle and the people who lived there?Merlin the magician asks Jack and Annie to find out. But are theybrave enough to brush the cobwebs aside and step through thecreaking doors? And are they smart enough to solve the mystery ofhow the castle became haunted? Find out in a story packed to the margins with magic, history,and adventure! First published in hardcover in 2003, Jack and Annie's spookyHalloween adventure is finally available in paperback. And—only inthe paperback edition—the book now includes a creepy Halloweenrecipe, a fun puzzle, and a preview of the next book in theseries!

What was it like to be a passenger on the Mayflower? How many people survived the first harsh winter in the New World? How did Pilgrim children spend their days? Find out the answers to these questions and more in this Magic Tree House Research Guide: Pilgrims. Includes fun facts from Jack and Annie, fantastic photos and illustrations, and a guide to doing further research.

Jack and Annie find themselves whisked away to ancient Egypt, where they come face to face with a dead queen--and her 1,000-year-old mummy!

MathMatters（《数学帮帮忙》）系列目前共42册，包括 数字与运算 、 量与计量 、 图形与几何 、 探索规律 、 统计与概率 等内容，几乎涵盖了小学阶段所有重要的数学知识。 MathMatters（《数学帮帮忙》）系列的每一本书都会讲述一个发生在孩子身边的故事，由故事中出现的问题自然地引入一个数学知识，然后通过运用数学知识解决问题。 孩子在主动参与和积极思考的过程中会慢慢发觉，课本上那些既枯燥又抽象的数学知识竟变得如此容易理解和掌握！更重要的是，孩子能深深感受到运用数学知识去解决实际生活中的问题所带来的快乐，从而激发他们学习数学的兴趣，让他们逐渐爱上数学。 这套数学绘本非常适合亲子共读，在阅读过程中，家长可以带领孩子推测情节的发展，探讨解决难题的办法，让孩子在愉悦的氛围中学到知识和技巧。 每个故事后都会用多样的

Merlin the Magician will not eat or sleep or speak to anyone in Camelot. What can be done? The enchantress Morgan knows who to ask for help: young Jack and Annie of Frog Creek, Pennsylvania! The brother-and-sister team quickly head off in the magic tree house on another magical and historical adventure. Their mission: discover one of the four secrets of happiness. Their journey: to a land of fierce samurai and great beauty, the capital city of Edo (now the city of Tokyo), in ancient Japan in the 1600s. Their tools: a research book to guide them and a magic wand with three special rules. In Dragon of the Red Dawn, Mary Pope Osborne transports readers back to the splendor, rich culture, and magic of traditional Japan. From the Hardcover edition.

Illustrated in black-and-white. Jack and Annie are whisked forty yearsforward in time and land at an international space station on the moon.There they don space suits and go exploring the lunar surface in search of thefourth object needed to free the enchantress Morgan le Fay from a powerfulspell.

Jack and Annie travel back in time to a South American rain forest in search of the elusive magician Morgan le Fay. Will they find a new clue to her whereabouts before they are trampled by stampeding killer ants?

HOW DO PENGUINS survive in frigid conditions? What happens at a research station in Antarctica? How long can an emperor penguin go without food? What other creatures live in the Antarctic? Find out the answers to these questions and more in the Magic Tree House Research Guide: Penguins and Antarctica.

Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure where they meet woolly mammoths, cave people...and fierce sabertooth tigers!