See the picture. The current situation is that the frame title and the first item appears at the same time.
But I only want to let the frame title visible at first, and after I click the screen, the first item turn to be visible.
How could I do that? Be grateful with any hints!
\begin{frame}
\frametitle{Maths Blocks}
\begin{theorem}<1->[Pythagoras]
$ a^2 + b^2 = c^2$
\end{theorem}
\begin{corollary}<3->
$ x + y = y + x $
\end{corollary}
\begin{proof}<2->
$\omega +\phi = \epsilon $
\end{proof}
\end{frame}