"The muscular system keeps us on the move. Whether chasing a soccer ball, playing video games, or even just breathing, every movement we make relies on muscles. Explore more about this important body system with easy-to-understand content tied to the curriculum of upper-elementary and middle school students and text written at a 2nd and 3rd grade reading level. Dyslexia-friendly font and design make learning accessible, and a recap at the end promotes checking for understanding to aid in comprehension. It's key biology curriculum made approachable for all"--