How is concrete made? And why does it matter?
Brains On! Science podcast for kids
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How to Make a Guitar Out of Concrete
You can pour concrete into lots of shapes to make a giant ball for an underground pool. You can add metal bars to wet concrete to make it extra strong so it can be the walls of a skyscraper. And did you know that a human in your world even made a guitar out of concrete? Here's what it sounds like.
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