Posts Tagged ‘geometry’
Geometry and the built environment
Posted by: Gary Ernest Davis on: April 1, 2011
Geometric terms Students often forget geometric language they learned in earlier grades The meaning – precise or vague – of words such as parallelogram, rhombus, angle bisector, acute angle, escape them. They have not learned to talk “geometry”. But the language is only a small part of the issue. Much harder is that their teacher […]
Make a triangle on a sphere with the largest possible sum of angles
Posted by: Gary Ernest Davis on: November 23, 2010
When teaching prospective mathematics teachers at Rutgers University in New Jersey, I liked to shake up their preconceptions in mathematics, the unexamined assumptions that they had accepted as fact because they were told it was so. So one evening I set the class the problem of finding how large they could make the sum of […]
