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Two ecosystems are in big trouble, and the help of environmental experts is needed. They will collect and analyze data to protect a stream and a nature reserve that are both in danger. As different data is collected and analyzed, students will learn how elements in nature are interconnected and depend on one another for survival. With vibrant photos, math charts and diagrams, grade-appropriate text, and informational text features to help navigate the text, students will learn practical, real-world applications of math skills as they learn how to estimate and build their STEM skills.