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Zoom in on 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.
RL
Grades
2 IL
Grades
K-4 GRL
N
