How is concrete made? And why does it matter?
Brains On! Science podcast for kids
How Does Concrete Get Harder?
Cement is used to make concrete. It's an ingredient, like when I add a little cement to my gravel smoothie in the morning and it's good for the digestion. Concrete is like the seed-oat chocolate chip raisin bread. The cement is like the flour and water that holds all the bits together.
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