Draw Position, Get Velocity

This is a rough draft and probably a bit buggy but here it is

On this version the graphs are adjacent horizontally

https://teacher.desmos.com/activitybuilder/custom/5f32ac5be408ad34b8a4eb6e

On this version the graphs are vertically stacked

https://teacher.desmos.com/activitybuilder/custom/5f346d62e06b5b2ea038d660