How to make a paper model with Sketchup

i am new to google sketchup . is there any extension plugin make a paper model with Sketchup

There are extensions such as Flattery that will help you unfold a model to make it flat. It is available from Sketchucation. Flattery also has a tool to add tabs so you can glue up the printed and cutout shape.

I have made card stock buildings for our model railroad layout that way.

For what it’s worth, Google hasn’t had anything to do with SketchUp for over 5 years.

With enough patience, you can use the basic tools for almost any flattening. A simple box shape is easy enough:

Flattery or Unwrap and Flatten were both made for this exact thing…I believe that Flattery even has an option to add tabs!