Browse

You are looking at 1 - 10 of 10 items for :

  • Professional Development / Teacher Training x
  • Quadratics and Conics x
  • Grades 9-12 x
  • Refine by Access: All content x
Clear All
Restricted access

Michael Weiss

One of the central components of high school algebra is the study of quadratic functions and equations. The Common Core State Standards (CCSSI 2010) for Mathematics states that students should learn to solve quadratic equations through a variety of methods (CCSSM A-REI.4b) and use the information learned from those methods to sketch the graphs of quadratic (and other polynomial) functions (CCSSM A-APR.3). More specifically, students learn to graph a quadratic function by doing some combination of the following:

  • Locating its zeros (x-intercepts)

  • Locating its y-intercept

  • Locating its vertex and axis of symmetry

  • Plotting additional points, as needed

Restricted access

Kent Thele

Encourage investigation of the conic-section attributes of focus, eccentricity, directrix, and semi-latus rectum using polar coordinates and projective geometry.

Restricted access

James Metz, Lance Hemlow, and Anita Schuloff

Explore the relationship between families of quadratic expressions factorable over the integers and Pythagorean triples.

Restricted access

Readers comment on published articles or offer their own ideas.

Restricted access

Readers comment on published articles or offer their own ideas.

Restricted access

Readers comment on published articles or offer their own ideas.

Restricted access

Amy F. Hillen and LuAnn Malik

A card-sorting task can help students extend their understanding of functions and functional relationships.

Restricted access

Readers comment on published articles or offer their own mathematical ideas.

Restricted access

Readers react to published articles or submit their own mathematical explorations.