1. You could recognize calcium by its flame.
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When public reading or speaking, there are a lot of do's and dont's when using your hands. If you use your hands in the correct way, you can guide your speech and catch your audience's attention.
Using your hands to speak or tell a story helps guide your speech. When telling about how big something was, you might use your hands to gesture or create something big. When describing something tiny, you will use your hands for the same thing.
Using your hands also helps you out in a number of ways. It helps prevent monotone. Monotone is when your voice does not contain any pitch or fluctuation, and you sound like robot. When using your hands, your voice will move the way your hands move. When your hands are by your side and flat, your voice might get flat. When you gesture to something big, your voice may get louder and have more depth.