Biggest Ideas: Garrett Morgan Inventor of the Traffic Signal offers a roughly 28-minute, screen-free audio biography ideal for children ages 610, exploring Garrett Morgans inventive spirit and pivotal contributions to public safety. Listeners discover how Morgan overcame obstacles to improve road safety with his invention of the three-position traffic signal, transforming transportation systems. Through engaging narration and interactive audio elements, the card builds historical awareness, biography comprehension, critical thinking, and STEM curiosity, while expanding vocabulary. A fun quiz at the end reinforces learning and memory, fostering empathy, problem-solving, and inspiration in young listeners.