How to input accordion code?

How to input accordion code?

Hi there! I don't actually know how to use jQuery. 
The code below ins't working and I don't know why. One of them is for the menu, and the other one is for the accordion. Is there something wrong? Should I put it in another place?
PLEASE, help-me!!! (Sorry for my English, I'm brasilian)


 <!-- Scripts -->
<script src="assets/js/jquery.min.js"></script>
<script src="assets/js/skel.min.js"></script>
<script src="assets/js/util.js"></script>
<!--[if lte IE 8]><script src="assets/js/ie/respond.min.js"></script><![endif]-->
<script src="assets/js/main.js"></script>
              
<script type="text/javascript">
$(function() {
$( "#Accordion1" ).accordion(); 
});

</script>