Reproductive system - parts and functions Whiteboard exercise Play

Respiratory surfaces Class activity Play

Respiratory surfaces Whiteboard presentation Play

Responses of the autonomic nervous system to changes in the external environment Student activity Play

Responses of the autonomic nervous system to the internal environment Student activity Play

Right- and left-handed coordinate systems Animation Play

Road in the coordinate system Animation Play

Rocky planet Chart Play

Rocky planets and gas giants Whiteboard exercise Play

Role of calcitonin Slideshow Play

Role of smell in animals Slideshow Play

Role of the kidneys in regulating water-electrolyte balance – Part 2 Whiteboard presentation Play

Role of the kidneys in regulating water-electrolyte balance – Part 2 Class activity Play

Role of the nervous system in homeostasis Student activity Play

Rotation in the coordinate system Student activity Play

Rotation in the coordinate system Whiteboard exercise Play

Rutherford's model of the atom Animation Play

Satellite navigation systems Whiteboard exercise Play

Satellite navigation systems Student activity Play

Secretion Animation Play

Selecting blood for transfusion Animation Play

Sensory (afferent) system of the PNS Slideshow Play

Serological incompatibility Student activity Play

Serological incompatibility Animation Play

Set of points in a coordinate system Student activity Play