Growth or decay: reading an exponential before you calculate it
Four questions from the same family, solved by inspection instead of algebra — and the one case where inspection will mislead you.
Resources
Notes from actual lessons
Written when a question comes up often enough to be worth writing down. No listicles, no score promises.
Percentage change of a percentage
The single most common careless mistake in Data Analysis.
Four moments to reach for Desmos — and three not to
Graphing is a tool, not a strategy.
What to ask a maths tutor before you pay
Seven questions, and the answers that should worry you.
From sentence to equation in three passes
A repeatable translation routine for word problems.
Twelve weeks out: building a realistic SAT plan
Working backwards from the test date.
Draw first, recall second
Why sketching beats memorising the formula sheet.
Surviving your first linear algebra midterm
Row reduction is not the hard part.