## Right Triangle Trig Formula Sheet

Get the help you or your students need remembering all of the formulas needed for right triangle trigonometry problems with this handy right triangle trig formula sheet.

## Concavity Posters

Help students remember the difference between concave up and concave down with these free printable concavity posters for the precalculus or calculus classroom.

## Paper Plate Angle Spinners for Trigonometry

Help your trigonometry students visualize graphing angles in standard position on the coordinate plane as well as coterminal angles and reference angles with these fun paper plate angle spinners. What is a Paper Plate Angle Spinner? When I first started teaching trigonometry, I would have my students build “angle spinners” in their interactive notebooks using …

## Trig Reference Angles Activity: Odd One Out

I created a new reference angles activity using the odd one out structure to give my trigonometry and precalculus students practice identifying the reference angle of a given angle in degrees. Reference Angles Activity Instructions Determine which angle of the four given angles has a different reference angle than the other 3 angles. In other …

## Converting Degrees and Radians Tarsia Puzzle

Provide your precalculus students with plenty of practice converting between angle measures in degrees and radians with this degrees and radians tarsia matching puzzle. I was on a mission this past school year to work on adding more creative practice activities to my precalculus course. When we started our unit on angles, I decided that …

## Evaluating Trig Functions Tarsia Puzzle

Give your students plenty of practice evaluating trig functions with this fun tarsia puzzle. In this activity, students must use either their knowledge of special right triangles or the unit circle in order to evaluate each function and match the corresponding pieces to build a triangle. For years, I tried to use a similar evaluating …

## ASTC Trig Quadrant Poster (CAST Diagram)

Looking for a visual to help your students remember the signs of the various trig functions in each quadrant? I created this set of ASTC trig posters to hang in my classroom for my pre-calculus students to reference. In some countries, this is known as a CAST diagram. That name has always bothered me though …

## Average Rate of Change Self-Checking Question Stack Activity

I created this average rate of change activity for my pre-calculus classes to work through recently. Question stacks are one of my favorite self-checking activities for the math classroom. Years ago when I taught mainly Algebra 1, I created what felt like a million different question stacks. When I switched to teaching higher level math …