Books in Blastoff! Readers, Level 4: Children's Storytellers series

Do you know how many bones are in your body? Get under your skin in this book. Young readers will discover how bones fit together, how they move, and how they protect other parts of the body.

'Ask not what your country can do for you. Ask what you can do for your country.' Young readers will learn good citizenship as they read about John F. Kennedy s community-focused life.

Why is a small piece of metal heavier than a large piece of foam? Why does wood float in water? This books answers these questions as it teaches children about density in water and air.

How do we breathe and why do we need oxygen? Your lungs work hard to keep oxygen flowing through your blood. This book explains how the respiratory system functions to take in the air we need to live.

Doberman Pinschers can be very intimidating dogs, but they are also loving and friendly. They became famous in World War I and World War II as messenger dogs and search and rescue dogs. Eager readers will learn about the physical characteristics of Doberman Pinschers and how these dogs - affectionately called Dobies - are used today.

Dalmatians are known for their sleek white coats dotted with black spots. Extremely loyal and active, Dalmatians love to go on hikes with their owners and do other outdoor activities. Students will trace the Dalmatian's evolution from coach dog to faithful pet.

We use wheels and axles several times every day. Young readers will learn how a wheel and axle work together, how they make work easier, and how they are used in larger, complex machines.

Yorkshire Terriers are a small, friendly, energetic breed of dog. They use their intelligence to perform well in agility and other dog sports. Students will learn the history, characteristics, and modern-day uses for this English dog breed.

Tennis is a popular recreational sport played by many people, but it is also played professionally in tournaments all over the world. Young readers will learn the basic rules of tennis, the equipment required to play, and the worldwide tournaments where professionals leave it all on the court.

People swim for many different reasons - recreation, exercise, or competition. The goal of competitive swimming is to be the fastest in a variety of events featuring different strokes. Kids will learn the history, strokes, rules, and much more!

Earth is a huge magnet with two magnetic poles. A magnet has an invisible force called magnetism. Children will discover what magnetism is and learn how magnets work.

Rottweilers almost went extinct at one point in time. Now they are common pets. They were once used to pull carts in the German town of Rottweil, from which they got their name. This title will take kids through the long history of Rottweilers to the present day, where many people cherish Rotties as working dogs and pets.