Materials were written for an entire year's course in geometry in which transformations were used to develop the concepts of congruence, similarity, and symmetry, as well as being a vehicle for proof.

Ontario’s new Grade 9 math course is part of the province’s four-year mathematics strategy to ensure students have the skills they need for the future. Grade 9 math was last updated in 2005. There has ...

About twenty years ago, Olgur Celikbas attended a conference on algebra in Turkey. He and his then girlfriend, Ela Özçağlar, had recently graduated from college in Ankara; both had studied math. At ...