Not really a student activity, but just an instructional resource that can be used as demonstrations or copied and pasted in desmos activity files you create.
In this game, students are shown a simulated motion that leaves the trace of motion diagram, and then they are asked to adjust the parameters of a model to match the motion.
A Dynamic “Click and Drag” Visualization of Area / Displacement on Velocity vs. Time Graphs: https://teacher.desmos.com/activitybuilder/custom/5f41c0e34ef2bf2e2a916f8f
A “sketch” game for kinematics graphs: features some randomization and immediate feedback. https://teacher.desmos.com/activitybuilder/custom/5f417c1149a2072f0282e477
A geometric construction for my QM class for when we talk about coordinate transformation, rotations, etc
The geometry tool in Desmos is pretty good for, surprise, geometric optics… haha
Its not yet integrated with the computational layer, so you can’t do anything too fancy yet, but still some good promising uses I think.