If you're not sure where to start watching these videos is a good idea.
There is all the infomation on the graphs and datasets and tutorials on how to use NZGrapher over on MathsNZ.
Something not working or have an idea to make NZGrapher better... please let me know.
NZGrapher is free for non-commercial individual use, you can however make a donation.
Schools are required to subscribe at a minimum of $0.50 per student using NZGrapher. Commercial users are also required to pay. Please visit the invoice creator for details.
This is optional for 2019, but will be compulsory for 2020.