Students will practice multiplying fractions while reading about symbiotic animal pairs. This grade 4 math reader seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math skills like multiplying fractions. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Text features include captions, a glossary, an index, and a table of contents to increase students' vocabulary and literacy skills and their interaction with the text. Math Talk poses problems for further thinking, requiring students to use their higher-order thinking skills.