How can you make things sound louder? Join Bitz, Bob and the children as they look at different ways to amplify sound, using tubes to make a music speaker louder and cardboard for mega megaphones. Let's rock! Show less
Discover 11,128,835 listings and 279,777 playable programmes from the BBC
How can you make things sound louder? Join Bitz, Bob and the children as they look at different ways to amplify sound, using tubes to make a music speaker louder and cardboard for mega megaphones. Let's rock! Show less