Free Computer, Smartphone and Tablet Apps to Use with the Book/Kit on Sound

Playing with Sound -- Squeaks, Crackles and Sound Effects

Sound Through Solids, Liquids and Gases

Does Sound Travel in a Vacuum?

Detecting Sounds -- the Human Ear

How the Ear Evolved

Sound Vibrations

Sound Waves

Quiz, Quiz, Quiz

Games and Activities

Louder, Louder, Louder

Pitch and Frequency

Hertz

Testing your own hearing

Sounds from Whales, Dolphins and Bats

Edison Phonograph

Recording Sound -- History

Comparing light and sound waves

The speed of sound

The Doppler Shift

Science, Technology and Sound

Bouncing Sound Waves