Compelling aspects to this mini course

Upon completing the course the following changes are anticipated:

  • Increased student agency and understanding

    During the early lessons, students are immersed in trigonometry rather than in the task of replicating one procedure at a time. As a result, their understanding and sense of agency is greater compared to a traditional approach.

  • Easy to implement

    Anyone can implement this approach.

  • It packs a punch

    The approach does not appear to be very different from a traditional approach, yet, in practice, it is a paradigm shift.

Course curriculum

    1. 210 Two Common Problems When Teaching Trig

    2. 220 Blocked Practice, Interleaving, and Hang Onto That Baby

    3. 230 Let's Unpack The Tutorial Before Watching The Video

    4. 240 Step 1: A Conceptual Approach To Right-Angled Trigonometry (Video)

    5. 250 Step 2: The Trigonometric Sentence

    6. 260 Step 2b: The Trigonometric Sentence PDF Support

    7. 270 Step 3: The Interleaved Worksheets (Video)

    8. 280 Step 3 (cont.): The Interleaved Worksheet Series

    9. 290 Step 4: Completing the trigonometry unit

    1. 310 Your Implementation Report*

    2. 320 We'd Love Your Feedback ... *

    3. 330 A Final Word (Video)

About this course

  • $40.00
  • 18 lessons


  • This is a really fantastic course that shows how principles of interleaving can be implemented in the trigonometry topic. With blocked practice, trigonometry questions quickly become about solving equations. The power of the interleaving approach comes from students really needing to think of the strategy they need to use, hence keeping trigonometry at the forefront of their attention. Thanks! James Ding.

You might be wondering

  • How long will this micro course take me to complete?

    About 40-60 minutes if worked through thoroughly. The micro-course comprises two excellent videos and some practical, feet-on-the-ground reading.

  • I’ve taught trigonometry ‘a hundred times’. And I teach it well. How likely am I to want to change my approach?

    If you are not open to changing your approach, then I suggest you don't waste your time looking at any alternative approach. However, there's a limiting factor in teaching: WE DON'T KNOW WHAT WE DON'T KNOW. Hundreds of teachers - many of them experienced - have been exposed to this approach, and the vast majority have been super-impressed. However, there is only one way to find out if you'll find this approach impressive ... dive on in! But don't skim the details!


Richard Andrew

Hi! I’m Richard. I’ve been delivering PD to teachers since 2007 - after twenty-plus years in the classroom, six as a Department Head. My main PD thrust is to support teachers to improve their ability to foster agency and understanding in students. This is because we only shine as mathematics teachers when our students demonstrate agency ... when students assume ownership through experiencing a sense of control over their learning. I've always been fascinated by the craft of teaching maths. I have a knack for presenting complex pedagogical ideas in easy-to-follow ways, and in the absence of edu-babble.