they would love this. while we discussed this with our engineers they helped us to see that bubbles relate to cells. cells are protective just like different types of bubbles are protective (bubble wrap protect the package, bubbles in soap protect our hands from germs). it seemed to be a stretch at first and it was challenging but the more we worked with it the more we found ways to relate bubbles to cells. we taught about bubbles shapes and how cells are different shapes. we talked about different sizes of cells and we measured our bubbles and used rulers to see the different sizes of our bubbles. we went 