Farming

Here is a link with some information Serfs were tied to the land. Generations would live in the same spot. The serfs would have a house in the village, often 10ft by 20ft, but sometimes a little larger. The serfs would farm the fields in the surrounding area. About 30 acres would be farmed by a family and produce enough for them to survive. The serfs would often have to pay outrageous portions of their crops to the lord or the manor.
Fields were in long strips, which was easier for the ox to plough, and an acre was the measurement of what an ox could plough in one day, One furlough long by one chain wide ((660 by 66ft).
One third of the land would be planted with barely (or sometimes another crop) in the spring, one third would be planted with wheat (or another winter crop) in the fall, and one third would be left to fallow (rest). The serf would rotate the fields around for the next growing season.

Using the cones, your group will start off on the tarmac outlining the size of your house. See how you all fit inside the house.  Then measure out the size of one acre, what you could get ploughed in a day. In the spring time you would plough 10 acres, and the same in the fall.

Bonus, about how many acres would the school yard be?