Science Education Resource Center at Carleton College
Serc: Chemical Changes and Healthy Bodies All From Snot!
In this demonstration, students observe the properties of "snot"; determine any changes within the "snot"; record and discuss their findings. This demonstration is done within a unit on the respiratory system. It leads to lively...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Aparatos Digestivo Y Respiratorio
Throughout this unit you will learn the important role that our digestive system and respiratory system play with our nutrition. It contains 13 interactive activities.