A balanced diet Slideshow Play

A ball on an inclined plane Animation Play

A ballistic pendulum Animation Play

A biconvex lens Animation Play

A black body Animation Play

A black body Student activity Play

A change in speed during the passage to a different medium Whiteboard exercise Play

A change in speed during the passage to a different medium Animation Play

A change in the intensity of X-radiation Whiteboard exercise Play

A change in the medium of wave propagation Simulation Play

A change in the medium of wave propagation Whiteboard exercise Play

A change in the medium of wave propagation Student activity Play

A change in the state of matter Animation Play

A change in voltage Student activity Play

A change in voltage Simulation Play

A change in voltage Whiteboard exercise Play

A change of medium Animation Play

A change of medium Student activity Play

A change of medium Simulation Play

A change of medium Whiteboard exercise Play

A change of nutrient in the culture medium Animation Play

A diagram of a nuclear power station Illustration Play

A light bulb Animation Play

A microscopic view Animation Play

A mobile source and a stationary observer Simulation Play