Sound : Stop Faking It! Finally Understanding Science So You Can Teach It

The book introduces sound waves and uses that model to explain sound-related occurrences. Like the other popular volumes, it is written by irreverent educator Bill Robertson, who offers this Sound recommendation: "One of the coolest activities is whacking a spinning metal rod to create a 'wah-wah' effect. It's a simple activity—the explanation incorporates several interesting properties of sound.