Yes, Geometry makes the funnest puzzles :-) Believe me, it pains me to suggest bumping it back. Introductory proofy linear algebra just hits a quadruple home r

Yes, Geometry makes the funnest puzzles :-) Believe me, it pains me to suggest bumping it back. Introductory proofy linear algebra just hits a quadruple home run: it's astonishingly useful, it's getting moreso, it's simple enough to remain age appropriate, and it can serve as an intro to proofs. As much as I enjoy geometry puzzles, I just don't see how they compete with that. For the true fans, of course, the answer today & in this hypothetical future is still to learn both.