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Looks at how sound travels, vibrates and changes in volume and pitch

Produktbeschreibung
Looks at how sound travels, vibrates and changes in volume and pitch
Autorenporträt
National Geographic Learning�s mission is to bring the world to the classroom and the classroom to life. With our English language programs, students learn about their world by experiencing it. Through our partnerships with National Geographic and TED, they develop the language and skills they need to be successful global citizens and leaders.