Henrietta spent years measuring star positions and sizes from photographs taken by the telescope at the Harvard College Observatory, where she worked. After Henrietta observed that certain stars had a fixed pattern to their changes, her discovery made it possible for astronomers to measure greater and greater distances—leading to our present understanding of the vast size of the universe.An astronomer of her time called Henrietta Leavitt “one of the most important women ever to touch astronomy,” and another close associate said she had the “best mind at the Harvard Observatory.” Henrietta Leaveitt's story will inspire young women and aspiring scientists of all kinds and includes additional information about the solar system and astronomy.

    Frizzle's class is having a hard time putting together a giant globe of the world. A piece is missing...an island so new it hasn't been discovered yet! Before they know it, the kids are beneath the oceans's surface, exploring an underwater volcano. Join the class as they learn about volcanoes.

    In simple, soaring language and breathtaking art, acclaimed author-illustrator Evan Turk has created a stirring ode to nature and nation. From the rugged coast of Maine to the fiery volcanoes of Hawaii, You Are Home reminds us that every animal, plant, and person helps make this land a brilliant, beautiful sanctuary of life.

    If you lived in colonial times--What kind of clothes would you wear?--Would you go to school?--What would happen if you didn't behave?This book tells you what it was like to live in the New England colonies during the years 1565 to 1776.

    It was the1930s, and many families had lots of kids. But only one had enough to field a baseballteam . . . with three on the bench! The Acerras were the longest-playing all-brotherteam in baseball history. They loved the game, but more important, they cared forand supported each other and stayed together as a team. Nothing life threw their waycould stop them.Full of action, drama, and excitement, this never-before-told true story is vividlybrought to life by Audrey Vernick’s expert storytelling and Steven Salerno’s stunningvintage-style art.

    But there was a time when people hunted the otters almost to extinction. Without sea otters to eat them, an army of hungry sea urchins grew and destroyed entire kelp forests. Fish and other animals that depended on the kelp were lost, too. But when people protected the sea otters with new laws, their numbers began to recover, and so did the kelp forests. Susannah Buhrman-Deever offers a beautifully written account of a trophic cascade, which happens when the removal of a single element affects an entire habitat. Asides that dig deeper are woven throughout Matthew Trueman’s dynamic illustrations, starring a raft of charismatic sea otters. Back matter includes more information about sea otters and kelp forests, including their importance and current status, the effects of the international fur trade on indigenous peoples, and a list of books and websites for readers who wish to continue to explore.

    Rather than focus on what germs are, this book teaches the basics of not spreading them: Cover up a sneeze or cough. Hug or blow kisses when you’re sick. And most of all, wash your hands! Child-friendly words and full-color illustrations help little ones stay clean and healthy. Includes tips and ideas for parents and caregivers.

    If you lived in the mountains of southern Spain, your bedroom might be carved out of a mountain. If you lived in a village in South Africa, the outside of your house might tell the story of your family. And if you lived in a floating green house in the Netherlands, you could rotate your house to watch both the sunrise and sunset. With intricate bas-relief collages, Giles Laroche uncovers the reason each home was constructed the way it was, then lets us imagine what it would be like to live in homes so different from our own. Showing the tremendous variety of dwellings worldwide—log cabins, houses on stilts, cave dwellings, boathouses, and yurts—this book addresses why each house is built the way it is. Reasons—such as blending into the landscape, confusing invaders, being able to travel with one's home, using whatever materials are at hand—are as varied as the homes themselves.

    Blueberries, check. Tomato, che– Wait, what?! Tomato wants to join the other fruits, but does he belong? The perfect mix of botany and a bunch of bananas!All the fruit are in the bowl. There’s Apple and Orange. Strawberry and Peach. Plum and Pear. And, of course, Tomato.Now wait just a minute! Tomatoes aren’t fruit! Or are they?Using sly science (and some wisdom from a wise old raisin), Tomato proves all the fruit wrong and shows that he belongs in the bowl just as much as the next blueberry! And he’s bringing some unexpected friends too!

    But who would want to be friends with such a teeny, tiny fish? Big Al, that's who! He's big and scary-looking, and he remembers what it was like to be friendless. Still, all the other fish think Shrimpy's just a nuisance. Then one day, when Big Al's life is in danger, Shrimpy is the only one brave enough and smart enough to save the day. Suddenly, everyone can see that friends come in all shapes and sizes and Shrimpy turns out to be the best friend any fish could want!

    Tomie dePaola--best-selling author of Strega Nona, Quiet, and many others--knows a lot about clouds. He also knows a lot about what people think of them.Some people see animals and pictures in clouds. The ancient Greeks believed that Hermes, the messenger of the gods, once stole the sun's cattle, which were clouds.In this unique picture book, Tomie introduces some of the most common types of clouds, as well as the myths and legends inspired by their shapes. Simple, whimsical illustrations show the variations in shape and color that herald changes in the weather.This book will tell you many things about clouds we bet you didn't know. Filled with his signature humor and gentle illustrations, Tomie dePaola's approach to nonfiction is like no other.A Reading Rainbow book.

    Birds and other animals scurry about looking for food. When they get tired, they stop to rest at a giant cactus. It is their hotel in the desert!

    of a spider. But don't be worried – he's more scared of you and your gigantic shoe! Actually, he's a lot like you. He goes to gym class and has Grandparents' Day at school. But he also spins sticky webs, scales walls, and takes wind–catching lessons. Lucky for him, his best friend is a fly!Doreen Cronin and Harry Bliss, the team behind the #1 bestselling Diary Of A Worm, spin a hilarious tale about the upside–down web world of an eight–legged charmer and his unlikely friend, Fly.

    Inside, you’ll find a clear description of what racism is, how it makes people feel when they experience it, and how to spot it when it happens.This is one conversation that’s never too early to start, and this book was written to be an introduction for kids on the topic.

    While his mate is off swimming in the ocean and catching loads of fish, he stands around in the freezing cold with an egg on his feet for two whole months, keeping it warm and waiting for it to hatch. This charming, oversize picture book is full of fabulous facts about nature’s most devoted dad.