Complete the Square to derive the Quadratic Formula

### Powers – Maths Poster

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

### Airplane Method for Factoring

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...

### trigonometria

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...

### Two-Step Equations Interactive Notebook Page

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

Image detail for -Trigonometry formulas/Triangle Relations

### Free Pi Day Activities

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...

### math geek with no social life

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

Algebra I Math Formula Sheet

### Calculus Derivatives and Integrals MatchingMania

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...