Boda projects

¿Cómo respiramos? Construye un modelo del aparato respiratorio - experCiencia
¿Cómo respiramos? Construye un modelo del aparato respiratorio - experCiencia
Proyecto sistema circulatorio Circulatory System Project
Proyecto sistema circulatorio Circulatory System Project - YouTube
Creating Model Working Lungs: Just Breathe - Activity
Photo shows a 2-liter bottle with two straws sticking through the cap. A balloon is held onto the ends of each straw with a rubber band. The bottom of the bottle has been cut off and a third, larger balloon is covering the opening.