The activity of auxins Animation Play

The angle of incidence and the angle of refraction Animation Play

The aquatic environment Slideshow Play

The area of umbra Animation Play

The arithmetic mean of the measurements of the speed of light Whiteboard exercise Play

The arrangement of electrons in an atom Student activity Play

The astronomical unit Student activity Play

The astronomical unit Whiteboard exercise Play

The balance between energy flow and the circulation of matter Whiteboard exercise Play

The balance of aerobic respiration Student activity Play

The Bohr model of the atom Whiteboard presentation Play

The Bohr model of the atom Class activity Play

The boiling point of water and the pressure Student activity Play

The boiling point of water and the pressure Simulation Play

The boiling point of water and the pressure Whiteboard exercise Play

The bouncing of a ball Whiteboard exercise Play

The bouncing of a ball Student activity Play

The Bunsen burner Student activity Play

The Calvin cycle Student activity Play

The capacity of a battery Animation Play

The Carnot engine Animation Play

The Carnot engine Animation Play

The Carnot engine Animation Play

The Carnot engine Whiteboard exercise Play

The Carnot engine Student activity Play