Geometers Sketchpad is dynamic geometry software that is found on school computers (in Simcoe) and also has teacher and student take-home rights. Teachers in SCDSB can access this file from the staff website for installation information (login required). 

 
Resources can be found here and here
 
 
A minimal version of Geometers Sketchpad, called “Sketchpad Explorer” is available on iPads. You can open any .gsp file on it, but not create them from scratch. TIP: post .gsp files on your class site, which will let students open them on iPads using the free app.