How can I mix content types under a subsection?

I’m working on a website where I want to display mixed content.

The header of the page should display links to articles and the rest of the page should display a list of item that are linked to more details.

• The page should be domain.com/widgets/bluewidgets/, this is working with the channels and templates perfectly.

• A blue widget should be domain.com/widgets/bluewidgets/blue-widget-A, this is working with the channels and templates perfectly.

• The article should be domain.com/widgets/bluewidgets/10-ways-to-use-blue-widgets. This is what I have trouble with.

I’ve tried using the pages module but I could not get that to work.

Any ideas on how I can get this to work?