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The 21st Century Junior Library Extraordinary Engineering series explains how important feats of engineering are accomplished. Stadiums examines the engineering concepts that make these structures a fun and safe space for large gatherings. 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.|Index|Sources for further research|Glossary of key words|The 21st Century Junior Library Extraordinary Engineering series explains how important feats of engineering are accomplished, providing age-appropriate content, aligned to curriculum standards, and adds colorful sidebars encouraging students to LOOK, THINK, MAKE A GUESS, ASK QUESTIONS, or CREATE. Additionally, this series includes directions for a simple activity at the end of each book, serving as an example of covered principles. This combination of reading and inquiry helps students develop the skills and content mastery needed to succeed in the 21st Century. Full color photos, a glossary, and a listing of additional resources all enhance the learning experience.