Hello.
I teach Maths (all levels) at CBS Thurles (7th yr in Ireland), and six years in England, where I had the opportunity and resources to try out a range of things.
Early graph drawing was done using Autograph, in particular for functions and calculus, particularly for developing ideas with students and providing visual aids to show links with various topics.
Since in Ireland, I have used GeoGebra for same.
I have also used for Coord and Synthetic Geom.
I use a variety of programs by
csfsoftware.co.uk which are great, in particular 10 Quick Questions Pro, Numbers Game (Countdown), and Pair Them Up. Great for end of lesson activities to promote general skills, vocab, etc
I have a large collection of PowerPoints made by
Boardworks.co.uk, and I cherry-pick slides for key points and interactive shockwave activities.
There are probably a few others things that don't spring to mind.
Rob Chaney