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Grade 1

Why Do I Wash My Hands?

From the Series Science in Action: Your Body

Why do we use soap? Which part of your skin is waterproof? How do germs pass from one person to another? Read More →

  • Lexile: 570
  • ATOS: 4.1
  • Dewey: 610

Why Do Moving Objects Slow Down?: A Look at Friction

From the Series Lightning Bolt Books ® — Exploring Physical Science

A baseball player slides on the ground to tag a base. A toy car's wheels rub against the floor and slow the toy car down. Friction is at work all around you. But what exactly is friction? And… Read More →

  • Lexile: 530
  • Dewey: 531'.4

Why Do Puddles Disappear?: Noticing Forms of Water

From the Series Cloverleaf Books ™ — Nature's Patterns

Do you know what happens to water when it evaporates? Or how cold the air needs to be for water to freeze? Join Ms. Ling's class as they become science detectives and solve some of nature's… Read More →

  • Lexile: 550
  • ATOS: 2.8
  • Dewey: 551.3'5

Why Is It Rusty?: Oxidation

From the Series Science Storybooks

Yun wants to cut some paper, but her scissors won't cut. The scissors are rusty. What makes the scissors rusty? Let's find out why some metals rust and learn how to keep things from rusting. Read More →

  • Lexile: 550
  • Dewey: 540

Why Is the Statue of Liberty Green?

From the Series Cloverleaf Books ™ — Our American Symbols

Do you know that the Statue of Liberty hasn't always looked green? Or that the first torch had to be replaced? Lady Liberty has been an important US symbol for more than one hundred years… Read More →

  • Lexile: 590
  • ATOS: 3.3
  • Dewey: 974.7'1

Why the Crab Has No Head

Nzambi Mpungu, creator of the earth and sky, has spent a long hard day making the Elephant. By nightfall, Nzambi still hasn't finished her next creation, the Crab, and she tells the little… Read More →

  • Lexile: 690
  • ATOS: 3.8
  • Dewey: 398.2

Why We Eat Dairy

From the Series Bumba Books ® — Nutrition Matters

Calcium in dairy helps us grow strong bones and teeth! Dairy products such as milk, cheese, and yogurt are part of a well-balanced diet. Carefully leveled text and colorful photographs help… Read More →

  • Lexile: 400
  • ATOS: 1.8
  • Dewey: 613.2/8

Why We Eat Fruits

From the Series Bumba Books ® — Nutrition Matters

From apples and grapes to pears and bananas, learn about the wonderful things fruits can do for your body! Carefully leveled text and colorful photographs teach early readers about nutrition… Read More →

  • Lexile: 430
  • ATOS: 1.7
  • Dewey: 613.2/8

Why We Eat Grains

From the Series Bumba Books ® — Nutrition Matters

Grains contain fiber and vitamins for a healthy body! Wheat, oats, rice, and other grains are part of a balanced diet. Carefully leveled text and colorful photographs teach early readers… Read More →

  • Lexile: 400
  • ATOS: 1.8
  • Dewey: 613.2/8

Why We Eat Healthy Foods

From the Series Bumba Books ® — Health Matters

Do you know what foods are good for you? It's not just vegetables! Find out more about eating healthy and why it's important. Lively, carefully leveled text, age-appropriate critical thinking… Read More →

  • Lexile: 380
  • Dewey: 613.2

Why We Eat Protein

From the Series Bumba Books ® — Nutrition Matters

Meat, poultry, seafood, nuts and eggs too, learn about the amazing things protein can do! Our bodies need protein to give us energy and make our muscles strong. Carefully leveled text and… Read More →

  • Lexile: 420
  • ATOS: 1.8
  • Dewey: 613.2/82

Why We Eat Vegetables

From the Series Bumba Books ® — Nutrition Matters

Learn about the wonderful things vegetables can do for your body! Veggies such as carrots, peas, corn, and broccoli are important for a balanced diet. Carefully leveled text and colorful… Read More →

  • Lexile: 390
  • ATOS: 1.9
  • Dewey: 613.2/8

Why We Exercise

From the Series Bumba Books ® — Health Matters

Playing games and going outside is fun, but did you know it's also good for you? Learn more about how exercise helps your body and mind grow! Lively, carefully leveled text, age-appropriate… Read More →

  • Lexile: 410
  • Dewey: 613.7/1

Why We Go to the Dentist

From the Series Bumba Books ® — Health Matters

Teeth need lots of brushing and flossing to stay healthy—but why? Going to the dentist helps us learn more about the importance of clean teeth! Lively, carefully leveled text, age-appropriate… Read More →

  • Lexile: 390
  • Dewey: 617.6

Why We Go to the Doctor

From the Series Bumba Books ® — Health Matters

Germs sometimes make us sick, and sometimes we get hurt. Where do you go when that happens? The doctor! Find out how a doctor's visit keeps you healthy. Lively, carefully leveled text… Read More →

  • Lexile: 370
  • Dewey: 610.69/6

Why We Go to the Hospital

From the Series Bumba Books ® — Health Matters

The hospital has lots of doctors and nurses who can help you. Do you know what they do? Learn more about how the hospital takes care of you! Learn more about how the hospital takes care of… Read More →

  • Lexile: 400
  • Dewey: 362.11

Why We Keep Clean

From the Series Bumba Books ® — Health Matters

How important is washing your hands and other body parts? Find out how keeping clean helps us stay healthy! Lively, carefully leveled text, age-appropriate critical thinking questions, and… Read More →

  • Lexile: 360
  • Dewey: 391.6/409

Wiggling Earthworms

From the Series First Step Nonfiction — Backyard Critters

Examine the interesting characteristics of worms, including their body parts and structure, their habitat and how it supports them, and how they get their food. Captions are paired with… Read More →

  • Lexile: 390
  • Dewey: 592.64

Wildfires

From the Series Live Oak Media eReadalong

Learn all about wildfires—how they happen, why they're important, and when they're dangerous—in this fascinating reader. It's sure to ignite your interest, with color photographs, interesting… Read More →

Will and Squill

A sweetly told tale about the friendship between a boy named Will and a squirrel named Squill. They do just about everything together until Will's parents surprise him with a kitten, and she… Read More →

  • ATOS: 2.1
  • Dewey: [E]

William's 100th Day of School

From the Series Cloverleaf Books ™ — Off to School

The 100th day of school is here! William's class celebrates this fun day with an exciting show-and-tell time, by learning to count to 100 in new ways, and even with a parade. Find out what… Read More →

  • Lexile: 550
  • ATOS: 2.3
  • Dewey: 372.18

Will It Rain or Snow?

From the Series Science Storybooks

This book shows how animals react to weather changes and reveals what we can predict from their behavior. Read More →

  • Lexile: 490
  • ATOS: 1.8
  • Dewey: 550

Windmill De Kat: Netherlands

From the Series Global Kids Storybooks

The Netherlands is a low-lying country with some land below sea level. People have fought back the sea to increase fertile land, and windmills have been part of this effort to reclaim land… Read More →

  • Lexile: 710
  • ATOS: 5.1
  • Dewey: 914

Windows, Rings, and Grapes — a Look at Different Shapes

From the Series Math Is CATegorical ®

In this humorous look at shapes, Brian P. Cleary and Brian Gable introduce circles, ovals, triangles, squares, and rectangles. The comical cats of the wildly popular Words Are CATegorical®… Read More →

  • Lexile: 590
  • ATOS: 3.6
  • Dewey: 516'.15