January 11, 2008
I teach grid coordinates by mapping the school using tiles on the floor. The tiles in the ceiling can be used if there is carpeting in the classroom. It is great fun finding out where the doors are, where the bathrooms are, and where the furniture is in the classroom. This mapping lends very nicely to talking about the third dimension because my desk contains several objects the students want to map but can't because they aren't on the floor. We also have a big drainage ditch in the corner of our yard. After suitable safety instruction, we measure volume and calculate how many cement bags would be needed to build the site. There are lots of things to measure around school. I love our chances to go away from the classroom in order to show that math is everywhere.