There are a lot of ways to start a fire: flint and steel, matches, a magnifying glass and sunlight. However it starts, all fire needs oxygen, fuel, and heat. To some, it may almost seem like magic, but there's a complicated chemical reaction taking place when a fire is lit! Readers learn what makes fire burn simply through age-appropriate language and content. Full-color photographs complement the main content and are followed by an illustrated graphic organizer that shows the process step-by-step.