Membranes and cell processes become memorable as students build and revise their models. Students uncover the structure and function of phospholipids, how cell membranes form, and how water and ions move in and out of cells via transport proteins. Students can model different conditions then predict which way water will move, making vocabulary like hypertonic, hypotonic, and isotonic more memorable. This is a kit you will use over and over as your curriculum progresses to deepen student understanding.