Pepsi vs. Coke, Microsoft vs. Apple, Batman vs. Superman--these are all examples of long-running rivalries. How do rivalries form, what does it take to become a rival, and what effect do rivalries have on human behavior? Learn all this and more as you dive into the competitive world of rivalries!

Created in partnership with TIME©, this nonfiction reader builds critical literacy skills while students are engaged in reading high-interest content.

• Reader's Guide and Try It! provide extensive language-development activities to develop critical thinking
• Table of contents, glossary, and index help increase comprehension and strengthen academic vocabulary
• A fun culminating activity challenges students to create a video ad campaign
• Prepares students for college and career and aligns with state and national standards