This activity goes along with a FREE podcast from Stuff You Missed in History Class. Search and download the file "How the Vikings Worked" from iTunes and play it for the students with this worksheet in front of them. Upon conclusion of the podcast, discuss the answers along with the open ended question at the end. Depending on depth of discussion, this entire activity should take around 30 minutes. I've used this as a good way to introduce the Viking chapter and also as a review.