Math 1 Functions: http://www.ncmath.com/functions
Math 1 Systems of Equations: http://www.ncmath.com/system-of-equations
Math 1 Exponential Functions: http://www.ncmath.com/exponential-functions
Math 1 Quadratic Functions: http://www.ncmath.com/quadratics
Math 1 Statistics: http://www.ncmath.com/math-1-stats-and-data
Calculator Desmos tutorial: https://s3.amazonaws.com/desmos/Desmos_Calculator_User_Guide.pdf