Algebra

Collection by Virginia Brotherson

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Complete the Square to derive the Quadratic Formula

Learn about Powers with this visible and informative A1 poster. The poster is perfect for display in classrooms, school hallways and at home.

I mentioned the "airplane" method for factoring in a recent post. Someone asked me what that was, so I thought I'd share. I have seen a lo...

cos cot xsenxx coscos.)( coscos.)( .2 )2( 1 seccos 2 2 senysenxyxyx senysenxyxyx 4.3)3( 1cossen += += += xtgx xsenxxsen 22 Soma e Diferença de Arcos .cos.cos)cos( .cos.cos)cos( xsenyysenxyxsen xsenyysenxyxsen + xsensenxxsen 1sec -1 π − = 22 22 cos..2...

A blog about teaching high school math | Pre-Algebra, Algebra 1, Geometry and Algebra 2

Image detail for -Trigonometry formulas/Triangle Relations

As I have said before, I am a self-proclaimed math geek. Last year I compiled Pi Day activities on the blog. For the mathemati...

thebeautyofmathematics: “ Trigonometry Reference Circle Created by Reddit user ‘graaahh’ via /r/mathpics (Direct link to post here; picture found in comments) ”

Algebra I Math Formula Sheet

Calculus Derivatives and Integrals MatchingMania consists of 2 activities - Natural Log & Exponentials and Trig Functions. Students are given at least 10 functions and work with a partner to find the inegral as well as the first and second derivative of the original function. They match the pr...