Introduction to Delta Math
Zach Korzyk (@MrDeltaMath)
Started in 2009 out of frustrations with Algebra II messing up on basic calculations.
No app but does work on the phone.
Geometry is currently being developed.
Some problems are interactive; can't submit until all questions are answered.
Teacher accounts can generate more simulations when needed.
Students prefer practice on Delta Math over a worksheet, feel like they are earning credit.
Students that miss days in class can still earn a 100% with the 'forgive lateness' button.