putting tikzpicture inside beamer

I am trying to add tikzpicture inside Beamer. However, I cannot use such functions as \pause, enumerate etc with TikZ.

Here is what I got thus far. I would like to change the enumerate environment and \pause after each point.

\documentclass{beamer}
%\usecolortheme{beaver}
\usepackage{textpos}
\usepackage{comment}
\usepackage{tikz}
\usepackage{graphicx}
%\usepackage[a4paper,left=2.0cm, right=2.0cm, top=4.5cm, bottom=2.5cm]{geometry}
\usetikzlibrary{snakes}

\begin{document}

\begin{frame}{Time Line of the Model}

\begin{tikzpicture}
%draw horizontal line
\draw (-2,0) -- (10,0);

%draw vertical lines
\foreach \x in {-1.5,3,8}
\draw (\x cm,3pt) -- (\x cm,-3pt);

%draw nodes
\draw (-1.5,0) node[above=3pt] {$0$};
\draw (3,0) node[above=3pt] {$1$};
\draw (8,0) node[above=3pt] {$2$};

\small
\node[align=left, below] at (0,-.5)%
{
1) The board of directors \\ offers the manager a \\ contract ($\omega_0, \omega_p, \omega_v$).\\\\
2) The short-term $v_S$, \\and the long-term $v_L$  \\ projects are initiated \\ by the manager.\\\\
3) The manager is \\ (partially) compensated \\ a fixed wage of $\omega_0$.\\\\
4) The IPO price of the \\stock  $p_0$ is determined \\by the investors
};

\node[align=left, below] at (4.5,-.5)%
{
1) Speculators observe\\ costly noisy signals $\theta_S$ \\ and $\theta_L)$ of the value of \\ short- and long-term \\ project. \\\\
2) The market for the firm's \\ shares opens for trade;\\ and the resulting market \\ price is $p$.\\\\
3) The manager is \\ (partially) compensated \\ an amount of $\omega_p p$.
};

\node[align=left, below] at (8.5,-.5)%
{
1) The terminal value \\of the firm $v$ is realized.\\\\
2) The manager is \\  (partially) compensated \\an amount of $\omega_v v$.
};
\end{tikzpicture}
\end{frame}
\end{document}

-
Welcome to TeX.SX. A tip: If you indent lines by 4 spaces, then they're marked as a code sample. You can also highlight the code and click the "code" button ({}). –  Claudio Fiandrino Sep 10 '12 at 14:58

I would use the columns environment to split your page; the tikzpicture works well for the line across the top, but there's no need to use it for all of the other parts.

Note that the columns environment takes an optional argument to specify the vertical alignment; I've used [t] for top. The environment allows you to specify each column using

\begin{column}{<width>}
content
\end{column}


which I have done, and changed all of your manual lists to enumerate. You can now add \pause at the end of each \item and get the display you want :) See section 12.7 of the documentation for more details.

\documentclass{beamer}
\usepackage{tikz}

\begin{document}

\begin{frame}{Time Line of the Model}

\begin{tikzpicture}
%draw horizontal line
\draw (-2,0) -- (10,0);

%draw vertical lines
\foreach \x in {-1.5,3,8}
\draw (\x cm,3pt) -- (\x cm,-3pt);

%draw nodes
\draw (-1.5,0) node[above=3pt] {$0$};
\draw (3,0) node[above=3pt] {$1$};
\draw (8,0) node[above=3pt] {$2$};

\end{tikzpicture}
\small
\begin{columns}[t]
\begin{column}{.4\textwidth}
\begin{enumerate}
\item The board of directors offers the manager a  contract ($\omega_0, \omega_p, \omega_v$).
\item The short-term $v_S$, and the long-term $v_L$   projects are initiated  by the manager.
\item The manager is  (partially) compensated  a fixed wage of $\omega_0$.
\item The IPO price of the stock  $p_0$ is determined by the investors
\end{enumerate}
\end{column}%
\begin{column}{.35\textwidth}
\begin{enumerate}
\item  Speculators observe costly noisy signals $\theta_S$  and $\theta_L)$ of the value of  short- and long-term  project.
\item The market for the firm's  shares opens for trade; and the resulting market  price is $p$.
\item The manager is  (partially) compensated  an amount of $\omega_p p$.
\end{enumerate}
\end{column}%
\begin{column}{.25\textwidth}
\begin{enumerate}
\item The terminal value of the firm $v$ is realized.
\item  The manager is   (partially) compensated an amount of $\omega_v v$.
\end{enumerate}
\end{column}
\end{columns}
\end{frame}
\end{document}

-
@ClaudioFiandrino I understand your point, but I think the question is a little ambiguous I would like to change the enumerate environment and \pause after each point. Let's wait for clarification from the OP –  cmhughes Sep 10 '12 at 15:39
I actually deleted my previous comment because, thinking a bit over your answer, it's clear it also provides the basics to add later on overlays in whatever manner the OP wants. –  Claudio Fiandrino Sep 10 '12 at 15:43
Great!! It is awesome!!!! Thanks for the help. –  Elias Sep 12 '12 at 3:05
@Elias you're welcome :) If my answer helped, don't forget to upvote it using the up arrow; if it solved the problem, please consider accepting it using the green check mark :) –  cmhughes Sep 12 '12 at 14:40