Hyperbolic Sine and Cosine (VIDEO!)

Here is a video briefly explaining the origin of those weird formulas for the weird notion of hyperbolic trigonometric functions. (It isn’t that weird actually!)

Hyperbolic Sine and Cosine

(Also … check out the video on squine and cosquine! Squine and Cosquine .)


    QUADRATICS, Permutations and Combinations, EXPLODING DOTS, and more!

    Written for educators - and their students too! - this website, slowly growing, takes all the content Tanton has developed in his books, videos, and workshops, and organizes it into short, self-contained, and complete, curriculum units proving that mathematics, at all points of the school curriculum, can be joyous, fresh, innovative, rich, deep-thinking, and devoid of any rote doing! Let's teach generations of students to be self-reliant thinkers, willing to flail and to use their common sense to "nut their way" through challenges, to assess and judge results, and to adjust actions to find success. (Great life skills!)

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