During our “How the World Works” unit, students investigated the central idea “Multiple systems interact to keep the human body functioning properly.” To have a hands-on experience, students built models of different body systems, and used their hands to learn and explore. Students built a working model of the human hand and watched as they pulled on strings to imitate muscles and tendons pulling the bones closed to make a fist. Students played with a model of a chamber in human heart and observed how the blood would flow from one chamber to the next. We used a sensory bin to recreate the different components found within our blood in the circulatory system. ​Working in small teams, students created models of the digestive system with clay,
Using a two paper bags, two straws and tape, students created a model of the human lungs. They were able to blow into the straws and watch as they air traveled down the trachea and split into the two lungs. Finally, students traced each other and drew one of the 6 body systems we learned about.

Source:: Grade 1 & 2 Blog