Read about some of the things that engineers design, such as bridges and water systems, to improve life in our communities. More →
Crabtree Classics
3749 records found. Displaying 1549 - 1560.
A recent survey on drug use recorded 729,000 youths 12 years of age or older who had used inhalants and solvents for the first time within the past year. These substances, along with… More →
In-line Skating in Action gives kids the inside track on a sport that refuses to stand still! Invented as a way for hockey players to stay fit in summer, in-line skates are now used for… More →
Imagine a world where you had to write letters, mail them at the post office, and wait a week or two for a response. You might not realize that there was once a world without your favorite… More →
Imagine a time when video games did not exist! You might not realize that there was once a world without your favorite entertainment forms. From games and music to electronic television and… More →
You might not realize that there was once a world without microwaves, umbrellas, or elevators! That's a lot of cold food, wet clothing, and stairs! Luckily, some innovative people have solved More →
You might be shocked to discover how some illnesses and diseases were treated years before medical innovations were made. This book will make you feel lucky that you were born after many safe More →
You might not know there was once a world without bike helmets, seatbelts, and airbags. This title looks at major innovations in safety over the years, and the ingenious inventors,… More →
Imagine a street filled with horses and buggies, or the skies without airplanes! You might not realize that, before vehicles, it used to take days - even weeks - to visit friends or family!… More →
Many animals are carnivores, but some eat mainly insects. Insect eaters, known as insectivores, can be as small as insects or as large as giant anteaters. Spiders, frogs, lizards, bats, and… More →
From giant termite mounds to intricate hives, Insect Homes provides children with a fascinating description of the many types of homes that insects build. Kids will be surprised to learn the… More →
Following insects from egg to adult, Insect Life Cycles outlines the amazing changes different species of insects go through before they become fully-grown. Full-color photographs and… More →
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