Whole number, Fraction, Decimal, Integer, Rational Number, Real Number, Complex Number
Measurement, Standard Units, Length, Area, Volume
Point, Line, Angle, Triangle, Quadrilateral, Polygon, Circle, Plane
Polyhedron, Trigonometry, Vector, Transformation Geometry, Topology, Other Geometries
Information to develop mathematics materials by grade level (and age)
*** NEW >>> Sources for term descriptions and definitions ***
For additional information on K-12math.info (updated: April 8, 2009).