Calculators:
DESMOS ONLINE CALCULATOR - Will do any graph in any format
EVEN BIGGER online calculator that can do matrices and statistics
Links:
IXL Math Learning Center - Go here first there are assigned modules here with instant feedback.
Khan Academy - Go here for practice in any topic from MPA, Algebra 2, or Geometry
Regents Prep- More practiceGo here to find specific grouped questions on any topic you want to get help in.
Purple Math - Great site with lesson and practice on all topics of math.
Vi Hart's Youtube channel - click here
Numberphile YouTube Channel - click here
How to make Hexaflexagons - Click here
Arthur Benjamin Does Mathemagics - Click here