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 …

# Trig Functions

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 …

This parent graphs of trig functions clothespin matching activity has been in the making for multiple years. Several years ago, I discovered a Parent Graphs of Trig Functions Worksheet from Robyn Wolfe of Carlisle Schools. Overview of Activity I used the worksheet with great success in my pre-calculus class, and I remember writing a note …

I decided to create a Unit Circle Bingo Game to give my Pre-Calculus students some much-needed practice with evaluating trig functions using the unit circle. Technically, this is more of a game of connect 4 than bingo, but bingo just sounds more fun. So, Unit Circle Bingo it is! Bingo is one of my go-to …

I created this fun quadrants unlocked activity to give my pre-calculus students some much needed practice determining the signs of trig functions in various quadrants. In my many years of teaching trigonometry and pre-calculus, one of the topics that my students have struggled the most with is using facts about one trig function to determine …

Several years ago, I created this trigonometry calculator skills pop quiz to give to my Pre-Calculus students before we learn to use our calculators for evaluating trig functions. Students tend to think that these calculator-based problems are super easy and that they don’t need to be taught how to type trig functions into their calculator. …

I created The Great Quadrant Guessing Game several years ago to give my Pre-Calculus students some extra practice determining which quadrant of the coordinate plane was represented by two trigonometric facts. The Great Quadrant Guessing Game For example, in which quadrant is the sine of an angle positive while the cosine of the same angle …

I created these SOH CAH TOA notes for my Pre-Calculus students a few years ago to review how to find the trigonometric functions of an angle, given a triangle. First, we reviewed the different parts of a right triangle. I have also created a poster of the parts of a right triangle that might be …

A couple of years ago, I created this trigonometry puzzle to keep my students busy when we unexpectedly finished our lesson with more time to spare than I had planned. This trigonometry puzzle is really the Twisted Wires Puzzle by Cliff Pickover in disguise. To keep my students from googling the puzzle (as they have …

I created these trig functions posters a few years ago when I was teaching a year-long trigonometry course. Somehow, they never got a blog post of their own. I created separate posters for the three basic trig functions and the three reciprocal trig functions. I designed these posters to print on 11 x 17 cardstock. …