人们是怎么知道地球是圆的的？你也许会说是哥伦布航海发现的，但其实远在古希腊时期就有了地球是圆的的理论。 从船上的?t望台能看到在甲板上看不到的远方，月相变化，时差的产生，不同地方的人能看到不同的星空等等，这些都表明地球是圆的。 这本英语原版科普绘本提供了丰富有趣的知识，穿越历史，进入太空，启发孩子观察、思考有关地球形状的现象与知识，培养孩子独立思考的精神。 书后有简单的小实验，引导孩子自己动手、观察。

From the expert team behind "It's Perfectly Normal" and "It's So Amazing " comes a book for younger children about their bodies--a resource that parents, teachers, librarians, health care providers, and clergy can use with ease and confidence. Full color.

出版社: Simon & Schuster Books for Young Readers; Reprint (2013年9月3日) 丛书名: George's Secret Key 平装: 304页 读者对象: 8 - 12 岁 语种： 英语 商品尺寸: 14 x 2.3 x 21 cm 商品重量: 286 g

The Magic Tree House adventures continue in books 9—12. Morganthe magical librarian of Camelot challenges Jack and Annie todiscover the answers to four riddles as they travel under the seato the Wild West, the African plains, and the frozen Arctic. Ifthey succeed, they will become Master Librarians! Books in this setinclude:Dolphins at Daybreak (#9)Ghost Town at Sundown (#10) Lionsat Lunchtime (#11) Polar Bears past Bedtime (#12) Magic Tree HouseBooks #9—12.

With the able assistance of Thing 1 and Thing 2 -- and a fleet of Rube Goldbergian vehicles -- the Cat in the Hat examines the various parts of plants, seeds, and flowers; basic photosynthesis and pollination; and seed dispersal.

It’s time to sleep! Who dozes standing on one leg withoutfalling over, snores while flying, or snuggles together in a bigsleepy pile?

When it comes to wild animals, everyone knows that there arecertain things you just don't do. It's clearly a bad idea to teasea tiger, pull a python's tail, or bother a black widow spider. Butdo you know how dangerous it can be to pet a platypus, collect acone shell, or touch a tang fish? Some creatures have developedunusual ways of protecting themselves or catching prey, and thiscan make them unexpectedly hazardous to your health. In thisdynamic and fascinating picture book by Steve Jenkins, you'll findout what you should "never" do if you encounter one of thesesurprisingly dangerous animals.

From the sunlit surface to the darkness of the deep, this book explores the fascinating life forms that exist in our oceans. Peer in to the depths of this tunnel effect book and investigate each zone of the ocean.

Leave it to the authors of the best-selling Worst-Case Scenario series to serve up a hilarious and totally "gross" handbook that will guide kids through all things slippery, slimy, and stinky. Find out how to survive boogers, bloody noses, barfing emergencies, and more. The tips in this book will have kids laughing out loud, while gearing them up to tackle all that's utterly disgusting in life, Worst-Case Scenario-style

Vampires, zombies, aliens, mummies, dragons. Yes, even the weird, unexplained, and other-worldly need to be survived! The authors of the best-selling Worst-Case Scenario series are back with a hilarious (and helpful!) handbook that's a blast through space, time, history, and the imagination. Find out how to survive a Mars landing, fight a werewolf, deal with a Bigfoot sighting, outwit a leprechaun, prepare for time travel, and more. Peppered with historical and scientific facts, this book will amaze, amuse, and delight. Kids will get the scoop on how to handle the weirdest situations Worst-Case Scenario-style!

Understanding science means understanding the world aroundyou. It also means having fun! The Super Science Book usesstuff you can find around the house to explain and demonstratedozens of science concepts. The explanations are clear and theexperiments and activities let you see and understand the scienceclose-up. Use the book to satisfy your scientific curiosity, or toprovide ideas for science fair projects.

B is for Binary, F is for Fibonacci, P is for Probability...even a small sample begins to give you the idea that this is a mathbook unlike any other. Ranging freely from exponents to light-yearsto numbers found in nature, this smorgasbord of math concepts andtrivia makes a perfect classroom companion or gift book for thebudding young mathematician at home. Even the most reluctant mathstudent will be drawn in by the author's trademark wit, MarissaMoss's quirky illustrations and funny captions, and the answersrevealed in W is for " When are we ever gonna use this stuff,anyway?" Download the G is for Googol Teacher's Guide(300K)

Morggan, the Magical Librarian of Camelot, asks Jack and Annie to find the four magic gifts that will free an enchanted dog from a spell. The quest leads them to a ship lost at sea, the Great Plains, and the forests of India and Australia. But will they learn the secret of the dog they call Teddy? This boxed set includes four exciting Magic Tree House adventures: #17: Tonight on the Titanic, #18: Buffalo Before Breakfast, #19: Tigers at Twilight, #20: Dingoes at Dinnertime, as well as a bonus packet of puzzles and games!

A is for APRIL FOOLS' DAY, Horrid Henry's favourite day of the year (except his birthday, of course.) B is for BOGEY BABYSITTER, Rabid Rebecca, the toughest teen in town. C is for CHRISTMAS PRESENTS, Father Christmas had better get it right this year! From the Purple Hand to pink frilly knickers; supersoakers to Sour Susan; football fiends to fizzywhiz drinks; demon dinner ladies to Dungeon Drinks - this book has it all and more. An encyclopaedia of absolutely EVERYTHING you ever wanted to know about Horrid Henry.