Rendering nested views

Rendering nested views

I'm trying to render nested view. Say I have views BigView and SmallView
<script type="text/template" id="big-template">
<% _.each(smallViews, function (smallView) { %>
<%= smallView.$el.html() %>
<% }); %>
</script>
<script type="text/template" id="small-template">
<div>
<%- name %>
</div>
</script>
I call render from the bigView and it renders everything fine, including
its children smallViews.
How do I update (render) a smallView individually without rendering the
bigView?