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。

Small enough to squeeze through power lines, Ms. Frizzle's class learns how electric current travels through the town, lights up a light bulb, heats up a toaster, and runs an electric motor. Fans of the Magic School Bus won't be left behind by this simple and informative introduction to the generation and distribution of electricity.

Count on Ms. Frizzle to teach anything but an ordinary lesson on meteorology. Flying through the clouds in the Magic School Bus, Ms. Frizzle's class experiences a hurricane-and even a tornado-firsthand. During their thrilling ride through the sky, Arnold gets lost! Will the Friz be able to save the day this time?

An eccentric teacher takes her class on an adventure through the city waterworks and teaches science painlessly. Ages 6-9. Copyright 1988 Reed Business Information, Inc. From School Library Journal Grade 2-4A remarkable meshing of text and illustration make this an outstand ing, lively treatment of a subject for which there is very little written for this age group. Ms. Frizzle has assigned her class a month-long investigation of how their city gets its water supply, to be followed by a field trip to the water works. With ``The Friz'' as driver, the children encounter surprise after sur prise, as they are magically clad in scu ba gear while in a tunnel, then slowly ascend to a cloud, where each child dis embarks; falls as a drop of water into a mountain stream; flows into a reser voir; and bounces through the purifica tion system, pipes, and water mains un der the city streets. The trip ends with all arriving, drop by drop, in the girls' bathroom in their school as a seventh grader turns on the water

Ms. Frizzle shepherds her reluctant students through the humanbody in a book that is as fancifully conceived as it iseducational. Ages 6-9. Copyright 1990 Reed Business Information, Inc. Grade 1-4-- Time to board the Magic School Bus again with thatwild, wacky, and wonderful teacher, Ms. Frizzle. After she teachesher class about the human body and they visit the science museum,Mrs. Frizzle shrinks the bus and the class--except Arnold, whoswallows them. This gives Cole and Degen the chance for twoparallel stories, inside and outside of Arnold. With the businside, Cole explains digestion from the stomach into the smallintestines. Then the bus enters a blood vessel where readers cansee the plasma, red and white blood cells, and the flow into theheart. From there the class, now out of the bus and garbed inoperating room smocks and masks, flows with the blood cells, nowwith fresh oxygen, to the brain. They climb down the bones of thespine, follow nerves to see muscles work, and then finally catch upwith the

George is heartbroken when he learns that his friend Annie andher father are moving to the US. Eric has a new job working for thespace program, looking for signs of life in the Universe. Ericleaves George with a gift—a book called The User’s Guide to theUniverse . But Annie and Eric haven’t been gone for very longwhen Annie believes that she is being contacted by aliens, who havea terrible warning for her. George joins her in the US to help herwith her quest—and before he knows it, he, Annie, Cosmos, andAnnie’s annoying cousin Emmett have been swept up in a cosmictreasure hunt, spanning the whole galaxy and beyond.

Presented in a beautiful slipcase, this expanding pocket guidebrings the Metropolitan Museum of Art's treasured rooms andexhibitions to life. The guide features the Great Hall, Temple ofDendur, Charles Engelhard Court, Arms and Armour Court, Boiseriefrom the Hotel De Varengeville, Petri European Sculpture Court,Medieval Sculpture Hall, Leon Levy and Shelby White Court, DamascusRoom, B. Gerald Cantor Sculpture Gallery, Modern Art Galleries,Astor Court and the Patio from the Castle of Velez Blanco. Eachstylish illustration is accompanied by a short and informativede*ion, making this the perfect purchase for anyone wishing toremember a visit to New York's most famous art museum. About the Author: Sarah McMenemy is the creator of London: A Three-DimensionalExpanding City Skyline (9781406323481), New York: AThree-Dimensional Expanding City Skyline (9781606332957), Paris: AThree-Dimensional Expanding City Skyline (9781406337273) andWashington D.C.: A Three-Dimensional Expanding City Skyline(97814

THE CAT IN the Hat puts to rest any notion that money grows on trees in this super simple look at numismatics, the study of money and its history. Beginning with the ancient practice of bartering, the Cat explains various forms of money used in different cultures, from shells, feathers, leather, and jade to metal ingots to coins (including the smallest—the BB-like Indian fanam—and the largest—the 8-foot-wide, ship-sinking limestone ones from the Islands of Yap!), to the current king of currency, paper. Also included is a look at banking, from the use of temples as the first banks to the concept of gaining or paying interest, and a step-by-step guide to minting coins. A fascinating introduction is bound to change young reader’s appreciation for change!

What is sand? How is it formed? Where does sand come from? Howdoes it get to the beach? Why is it different colors? Let thesandpiper sleuth show you the answers to these questions in thislively, collage-style look at a familiar substance that's neverbeen so fascinating: sand. Parents' Choice Approved Winner "Astriking success...an outstanding choice...a fascinating, livelypresentation." "--School Library Journal"

What causes earthquakes? Where do they happen most? What should you do if you feel the earth shake? Just follow the friendly crow-in-the-know for all the answers

In a fading town, far from anyone he knew or trusted, a young Lemony Snicket began his apprenticeship in an organization nobody knows about. He started by asking questions that shouldn't have been on his mind. Now he has written an account that should not be published, in four volumes that shouldn't be read. This is the first volume.

Howcool!TheCatandCo.time-traveltotheGreatIceAge! TheCatintheHatvisitswithIceAgemammalsonawhirlwindtourofthePleistocene!FromgroundslothsasbigaselephantstobearsasheavyasVolkswagens,theCatintroducesyoungreaderstomastodons,mammoths,woollyrhinos,saber-toothedcats,gianthorses,andlotsmore—includinghumans!Inaddition,youngreaderswilllearnbasicfactsabouttheGreatIceAgeandearlyhumanlife,thecharacteristicsofmammals,andthestudyoffossils.IdealforsupportingtheCommonCoreStateStandardsandanaturalforfansofthehitPBSKidsshowTheCatintheHatKnowsaLotAboutThat!,thisisagreatwaytointroducebeginningreaderstoscience!

The Cat and Co. take off to the faraway land of Gerpletz wherethey know quite a lot about caring for pets—especially cats, dogs,guinea pigs, birds, and bunnies! From the food, shelter, exercise,and medical care they need to the love and companionship theycrave, the Cat teaches beginning readers how to keep their pets(and themselves!) healthy, safe, and happy.

WHY IS THE arctic so cold? How do polar bears cross thin ice?How did people learn to survive in that harsh climate? Find out theanswers to these questions and more in Magic Tree House ResearchGuide: Polar Bears and the Arctic, Jack and Annie's guide tothe arctic. This is the nonfiction companion to Polar Bears pastBedtime .