Living things come in all shapes and sizes. Some are very large, while others can only be seen using a microscope. With this engaging book, you will learn how scientists use algebraic expressions to explore the growth of amoebas, euglenas, and bacteria. 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 new mathematical concepts and build their STEM skills.