In first grade (it was definitely in 2010 or 2011), I remember playing some sort of two-dimensional autorunner-platformer game where you play as a brain with legs on an obstacle course. There were definitely hurles you had to jump over.
The background was blue/light purple, while the objects in the foreground were all solid black. I am about 40% sure it had some sort of score counter. All the colors were completely solid.
You played as a brain with legs. Either the brain or brain-like structures that somehow could move appendages of some sort ate circular objects of some sort.
It was very likely running on Adobe Flash. It was not NeuroVoider (completely wrong year, not at all similar) or any of the Run games (I have played them, definitely not the same.) I don't think it was on PBS Kids. It was in America, definitely on an English-language site. I don't think it was explicitly educational, but the site was probably supposed to be, as my teacher approved of this game.
It looked a bit like this: