Constructing cell membranes in seventh grade science


Students in seventh grade science have been investigating how cell membranes work.  


Students constructed cell membranes out of straws and used bubbles to help simulate how a membrane works.  Groups worked  together to demonstrate different things a cell membrane does. For example, students twisted the membrane to show that it is flexible.  


Also, students used string to create an opening for things to pass through the cell membrane.  Then they removed the string to see how the membrane closed and fixed itself.