These are Google Slide presentations that I use with my beginners. If you're new to improvising, or are looking for a way to introduce or reinforce the concept of harmonic form with your students, you may find these useful. You can see the slides for these from any device; to see the presenter notes you will want to use the Google Slides app on a phone or tablet (or view the presentation from a laptop or desktop).

Harmonic form explained through a modal tune, "Impressions"

Harmonic form explained through a 12-bar blues, "Sonnymoon for Two"