Physics learners apply the concepts of fluid pressure input and output to firefighting. Divide your class into small groups and give them each a few cards that list nozzle type, hose length, hose size, and structure dimensions, They are to calculate the required pressure for the pump to put out the fire without damaging the hose. Then they switch cards with another group and try again with new dimensions. This lesson plan is vague, but the activity provides valuable problem solving practice.