Teachers-and students-Guide to Everything Quadratic

Details: 100 pages
Availability: UNDER REVISION! Coming soon.

A comprehensive guide to everything one might ever want to do with quadratics in the standard high-school curriculum.

PART I: The Algebra of Quadratics
Don’t memorise the quadratic formula! That is way too hard and too far removed from true understanding!
(How about the cubic formula? We derive that too in this section – just for kicks.)

PART II: Graphing Quadratics
The easy way to graph quadratics.
The easy way to figure out a vertex without memorizing the vertex formula!
[And just for fun … How to graph complex roots!]

PART III: Fitting Quadratics to Data
Got three points? Want a quadratic to pass through them? Just write down the answer! (No fussing with calculators or messy systems of equations!)


    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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