A wealth of resources for teachers introducing locus theorems to students. Lessons cover simple definitions, provide examples and diagrams, and offer connections to real-life situations. Practice exercises offer students online quizzes...

At the end of this tutorial, the learner will understand the cultural worldview spectrum re: the degree to which human action or choice can influence, change, or control events and situations. It is 2 of 3 in the series titled "Internal...

A collection of 32 video learning modules on everything to do with the brain.

This site explain ellipse how they are formed with the foci, and gives a nice moving demonstration of drawing an ellipse. Read further down the page to equations of ellipses in different systems, including polar. The last half of the...

Provides a definition and examples of perpendicular bisectors.