======Embedded Sage Cells======
<code html>

  <h2>Factorial</h2>
  Click the “Activate” button below to calculate factorials.
    <div id="mycell"><script type="text/x-sage">
@interact
def _(a=(1, 10)):
    print factorial(a)
 </script>
</div>

<h2>Your own computations</h2>
Type your own Sage computation below and click “Evaluate”.
    <div class="compute"><script type="text/x-sage">plot(sin(x), (x, 0, 2*pi))</script></div>
    <div class="compute"><script type="text/x-sage">
@interact
def f(n=(0,10)):
    print 2^n
</script></div>
</code>

<sagecell>plot(sin(x), (x, 0, 2*pi))</sagecell>