Many of our lessons contain embedded GeoGebra applets.

These dynamic applets often illustrate concepts more powerfully than static illustrations can. These applets are not mere animations; students often gain much from manipulating and interacting with the angles, lines, shapes, graphs, and other objects in the applets.

Lessons with dynamic applets have the phrase “with GeoGebra applet” suffixed to their titles in the table of topics here.

A couple of examples…

Circle theorems Access the full, interactive applet and more at lesson G10a.

Pythagoras’ Theorem in 3D Access the full, interactive applet and more at lesson G20a.