The procedure for constructing a working model of the respiratory system is revealed in this resource. A wonderful approach would be to have biology learners work in pairs to create a model and write the suggested paragraph explaining...

Learners create a model of the lungs and diaphragm. For this breathing lesson, students create a model out of a plastic bottle and balloons. They see how the diaphragm helps to fill the lungs with air. 

Middle schoolers participate in an experiment in which they gather and examine particiles in the air. They place pollution detectors at different locations and identify problem areas. They discuss how engineers can use this type of...