Simple harmonic motion graphs including energy
I have added two more graphs into the interactive animation. However, the app has become a bit sluggish when changing the period or amplitude. It still works smoothly when viewing...
August 2020
Simple Harmonic Motion Graphs
Here's my attempt at animating 5 graphs for simple harmonic motion together in one page. From left column: $$v = \pm\omega\sqrt{x_o^2-x^2}$$ $$a = -\omega^2x$$ From right column:...
Thin Converging Lens App
Phase Difference
The first of two apps on Phase Difference allows for interaction to demonstrate the oscillation of two different particles along the same wave with a variable phase difference....
Longitudinal and Transverse Waves
I modified Tom Walsh's original GeoGebra app to add a moveable single oscillating particle for students to observe its movement along a longitudinal wave and a transverse wave....
Movement of Particle in a Wave
This GeoGebra app allows students to observe closely the movement of a particle in a progressive wave, with two possible directions of energy propagation. In a typical question,...
Sharing on Formative Assessment using SLS
This deck of slides was used today in my sharing session with some colleagues on the use of assessment features in SLS. Sharing it here for anyone who might be interested.
Invisible Spheres using Hydrogel
I used this demonstration to start a conversation about refractive index with my IP3 kids. These hydrogels certainly generated a lot of excitement as the kids were fascinated with...