How to set the click on Down button effect on beamer?

How to make the effect of "When I click on Down button on beamer, another sentence appears" ? Do I need to set multiple frames? If yes, how to make all of these frames on the same page ?

How to proceed please?

Thanks a lot!

• You should use the overlay specifications that beamer supplies. This includes things like \only, \onslide, \pause, ...
– Werner
May 13 '14 at 19:45

\begin{itemize}

• You could add the simpler \begin{itemize}[<+->]\item stuff... \end{itemize}. May 13 '14 at 21:24