Heidi's Math Store

A foldable resource to help your trig class to understand each part of transformations of sinusoids.

A table that breaks down and gives formulas and examples of Arithmetic and Geometric Sequences and Series.

For Algebra 2 and Precalculus students, this mini tutorial will walk them through two methods of finding determinants of 3x3 matrices. (Assumes they already know 2x2)

Students learn the conic sections by studying transformations. The "traditional" form with finding the focus and directrix can be confusing. I offer the 4p method as an alternative for students to use when the multiplier is on the NON squared variable...

Unit circle, degrees, radians, special right triangle ratios and more!