Eight problems on [a skill]
climbing from trivial to
genuinely hard, changing one
thing at a time. Answers at
the end, plus what each step
is testing.

A Practice Ladder for One Skill

One variable at a time, from trivial to hard.

Prompt

I need to get fluent at [a mathematical skill]. Write eight problems that climb from trivial to genuinely hard, changing only one thing at a time, with answers at the end and a note on what each step is testing.