|Course Home Page >> log >> (Previous Class | Next Class)|
March 6, 2006
Lecture on Coordinates (30 minutes).
How are they treated in schoolbooks?
- A page from the Singapore 6th grade text
- Pages from Glencoe Algebra I (2006 Louisiana Edition).
Coordinates from an advanced perspective.
- Coordiante systems on a line. Naked lines. Imposing a coordiante system. Coordiantes are functions. Relationships between coordiate systems.
- Coordinate systems on the plane. Naked planes. Systems with perpendicular axesand other systems. Changing coordinates.
Coordinates from an historical perspective.
Student discussion. (25 minutes).
Student groups will prepare answers to the question, "Why the graph of a linear equation is a line?" We will compare proposals.
Work on homework. (25 minutes).