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.

# Trigonometry

Are your students struggling to evaluate trigonometric functions of quadrantal angles? This Odd One Out Activity will give them plenty of practice and highlight common errors made while trying to work these types of trig problems.

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 …

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 …

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 …

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 …

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 …

Looking for the perfect activity to help your students practice the unit circle? Check out these 7 engaging unit circle activities I use with my pre-calculus students during our trigonometry unit. Activities to Learn the Unit Circle Deriving the Unit Circle Foldable Several years ago, I created this deriving the unit circle foldable for my …

Looking for hands-on trigonometry activities? Here’s a collection of 27 fun and engaging trig activities that I have created over the past decade while teaching trigonometry and pre-calculus to high school math students. What is a Radian? Hands-On Activity I created this hand-on exploration for my trigonometry students to explore the question “What is a …

Teaching trig? Check out these 5 free printable trigonometry posters that I have made for my pre-calculus classroom over the years. They are each available as a downloadable PDF file. Unit Circle Display I created these unit circle magnets to use with my dry erase magnetic unit circle from EAI Education. I plan to use …