If Radio Checked Show Div

HTML

<form>
<input type="radio" name="group" value="Educational Institution" /> Radio 1<br />
<input type="radio" name="group" value="Other" id="watch-me" /> Radio 2
<div id="show-me"><input type="text" name="group" value=""/></div>
</form>

CSS

#show-me {
  display:none;
}

JavaScript

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