Dave Wilfahrt
High school math teacher of 30+ years. Author of three books. Into Bitcoin, AI, fishing, and whatever's next — all in one place.
High school math teacher of 30+ years. Author of three books. Into Bitcoin, AI, fishing, and whatever's next — all in one place.
Units, quizzes, and packages I built for my own Algebra students — formatted for Canvas New Quizzes and ready to drop into your course.
A video-stimulus activity where students catch the teacher's planted mistake. 4-question Canvas package included.
Coming soonMini-lessons, stimulus sets with five questions each, and weekly quizzes — the full unit structure, ready to import.
Coming soonFrom the semester course where students build a startup financial model and pitch it Shark Tank-style.
Coming soonNew units get added here as I build them for my own classroom. Check back — the shelf keeps growing.
Stay tunedSecure checkout via Stripe is on the way — the shelves are being stocked and the register opens soon.
Education, AI, and Bitcoin — the ideas I can't stop thinking about, in print.
Where schooling came from — and where it's headed.
Get it on Amazon
A full year of learning alongside AI.
Get it on Amazon
History, technology, innovation, and the quest for real-world adoption.
Get it on AmazonDirect sales open soon. The books are also available on Amazon in the meantime.
Not everything fits on a shelf. This is the rest.
Minnesota lakes, misty mornings, and the eternal search for the right cabin.
Visit the fishing page →Playing with AI in the classroom and out of it — what works, what doesn't, what's next.
See the experiments →Thirty years of curiosity doesn't narrow with age. New projects land here first.
Stay tunedI'm Dave Wilfahrt — "Mr. Wilf" to about three decades of high schoolers. I teach math in Minnesota, write books about education and Bitcoin, and build things for my classroom that sometimes turn out to be worth sharing.
This site is the whole collection: the teaching resources, the books, and the odd interests — one roof, no middleman.