I have featured several different paper models of the war hammer of Marvel Comics' Thor, but this is the first one that is specifically scaled for children. Offered by the Disney Family website, the template for this model may be downloaded here. In both Norse mythology and also in comic books published by Marvel, Thor's hammer is named "Mjolnir". Looking for the Thor helmet in the photo? It is located here.

Other Papercraft Thor Hammers:
1:2 Scale Comic Book Version
1:1 Scale Thor Movie Version
1:1 Scale Avengers Movie Version