A fold-out timeline covering inventions for grades 3 and up. Time Line: Inventions offers kids homework help and a unique way to understand and visualize history. Full-color photographs and visuals on every page help kids memorize important historical dates and facts. The chronological, at-a-glance layout helps them place each major invention on a historical timeline. With this 10-panel accordion format, kids can unfold the past, live the adventure, and make history come alive! The Time Line series cover the core curriculum, making them great for science help and history homework help. Each timeline has 5 full-color feet of facts, historical events, bios, and kid-friendly maps. Time Line is the one reference every child should have.