Studying the circulatory and respiratory systems? Save money and purchase the bundle! This bundle includes 20 days of complete lesson plans, 10 for each system. Students will love the fun, engaging activities provided. You will love that activities are low to no-prep and completely planned out for you! Lessons cover parts of the respiratory system, functions of the respiratory system, breathing, inhaling, exhaling, hiccups, sneezing, respiratory health, parts of the circulatory system, functions