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Okay, end of digression.
Back to 2003–2004, and getting the Algebra I Cat book online.
I wanted
randomly-generated practice problems
for each section,
so that students could get
as much practice as they needed for each concept.



I wanted
randomly-generated worksheets with solutions.
This way, students could
practice away from the computer.
And, teachers could
use the worksheets for practice problems and quizzes.