Bert Jovin is an amateur motocross racer. Learn what it takes to be successful in this high-intensity sport and practice using rational numbers on the ride. Packed with factual information and high-interest content, this adrenaline-boosting book uses real-world examples of problem solving to build students' math and reading skills. Let's Explore Math sidebars feature math questions that challenge students to develop their math skills. A problem-solving section at the end of the book prompts students to reflect and apply what they've learned. Demystify math with this leveled book that makes learning math fun and accessible for kids ages 10-12 and appeals to reluctant readers.