Divisibility Rules Galore! (VIDEOS)

Here, in one spot, is a collection of various divisibility rules.
Looking for a rule for 7? Here one is.
Looking for a rule for 9? Here’s one!
Looking for a rule for 37? You will find it here too!

Divisibility Rule for 7 – and 19 and 43 and 37 and …
Divisibility Rules for 3 and 9
Something Cute about Dividing by 9
Divisibility Rule for 11
Divisibility for 1,2,4,5,6,8,10,12,14,…
Dividing by 97 – and other such numbers


    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!)

    CHECK OUT: www.gdaymath.com

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