A Formula for Pascal’s Triangle (VIDEO!)

Well … “A formula” is not quite the right phrase here, but I will show you in this video how to write down a formula for the 87-th entry of the 198-th row of Pascal’s triangle (or any other entry of your choosing) in less than two seconds! And once you see where these entries are coming from, you are all set to understand the binomial theorem. (It’s another video!)

Pascal’s Triangle: Formula


    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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