The children in this book are planning a birthday party. They need to figure out how many friends to invite, how much food to buy, and how many party favors they need. They'll need to know how to count to help them plan the perfect party! 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 to count and build their STEM skills.