"The 21st Century Junior Library Extraordinary Engineering series explains how important feats of engineering are accomplished. Tunnels examines the engineering concepts that make these important structures possible. Sidebars encourage readers to engage in the material by asking deeper questions or conducting individual research. An activity, full color photos, a glossary, and a listing of additional resources all enhance the learning experience"--...

Tunnels allow people to cut through tall mountains or even travel deep underwater. Discover the engineering behind tunnels.

Through simple text and informative photos, readers will engage with this cornerstone of transit infrastructure. Each chapter will focus on a new aspect of tunnels, such as the history of their invention, technological advances in their materials and designs, and examples of their use both in ordinary life and extraordinary situations. A follow-up activity challenges readers to put into practice what they have learned.

"Moles, beavers, rabbits . . . these animals burrow tunnels in the ground every day! What other kind of creature makes tunnels? Humans! In Tunnels! With 25 Science Projects for Kids, kids ages 7 to 10 explore the fascinating world of passageways beneath the ground, dug deep within the earth through soil and rock. But why dig through rock to make a tunnel? Tunnels give people a way to travel and transport goods from one place to another. Readers learn...

"Kids will learn about the history of tunnels with Engineer It! Tunnel Projects. They will discover how tunnels are built. Then, build their own train tunnel, underwater tunnel, and more. Each project has color photos and easy-to-follow instructions. Young crafters will be budding engineers in no time! Aligned to Common Core Standards and correlated to state standards. Applied to STEM Concepts of Learning Principles."--Publisher's website.

"Carefully leveled text and vibrant photographs introduce early readers the science and engineering behind the Channel Tunnel. Includes infographics, an activity, glossary, and index."--

Explores the engineering challenges behind building tunnels, as well as the creative solutions found to overcome those challenges. Accessible text, vibrant photos, and an engineering activity for readers provide a well-rounded introduction to the engineering process.