Human Body Systems – Concept-Based, Inquiry-Driven Science Unit (Grades 4–6)Bring science to life with this hands-on, 6-week inquiry unit exploring how the human body’s systems work, connect, and compare to those of other living organisms. With over 170 pages of differentiated activities, students investigate the circulatory, respiratory, digestive, nervous, immune, skeletal, and muscular systems through experiments, research, and creative problem-solving. Designed for concept-based inquiry