Radio

<strong>Radio</strong> has been commercially available since the late 1800as. But todayas radiois has evolved greatly over the last 200 years. What factors drov... » 

Radio has been commercially available since the late 1800as. But todayas radiois has evolved greatly over the last 200 years. What factors drove thisevolution? Using a product that kids are familiar with Radio this bookintroduces kids to the concept of innovation and its impact on their everydaylife. «