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pckeller.bsky.social
High school physics teacher, a little math too. And dogs.
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Changing the order of integration in 3d can be hard to visualize...#desmos 3d to the rescue! www.desmos.com/3d/kdggenuks7 #Iteachmath

submitted 15 hours ago • 0 comments

Just got this to work: modeling pumping up amplitude on a swing, using Interactive Physics. #iteachphysics

submitted 22 days ago • 1 comment

Okay, this is nonsense but... you know how the distance from Earth to sun is one astronomical unit? So then, from the Earth to the moon, that would be...1 zappa, right?

submitted 32 days ago • 0 comments

I have an @desmos.com question: in 2d, you can use use the shift key to zoom on one axis at a time (which is nice!) Is there an equivalent to that in Desmos 3d? And if not, could there be? Something like shift-scroll for the x axis,ctrl for the y axis and alt for the z axis? TIA #Iteachmath

submitted 32 days ago • 2 comments

It's extra satisfying to see that a simple solar system modeled in Interactive Physics will in fact demonstrate Kepler's 3rd Law. Not as pretty as some websites, but I think there is value in seeing this tumble out of the simulation engine, rather than programmed in... #Iteachphysics

submitted 35 days ago • 0 comments

It's interesting to think about inflection points in terms of the rotation of the tangent line. You can identify those points without even seeing the graph itself! Just watch that tangent line switch back and forth from CW to CCW. #Iteachmath www.desmos.com/calculator/t...

submitted 38 days ago • 1 comment

Not sure what to make of this…

submitted 67 days ago • 0 comments

Last demo of the year came out nice. And my break starts in just a few hours. So this is a good morning so far. #Iteachphysics

submitted 70 days ago • 0 comments

Here is an intro to partial derivatives and directional derivatives, focusing on their geometric meaning. www.desmos.com/3d/25qiw4vzhg #Iteachmath (If I keep working on these things, the papers will grade themselves, right?)

submitted 72 days ago • 3 comments

Good morning!

submitted 76 days ago • 0 comments

Since it is a physics engine, "Interactive Physics" can surprise you. Here is a car going around a track. On the second lap, it hits an oil spill and friction vanishes. When I ran this, I discovered that I only partially knew what to expect! #Iteachphysics

submitted 80 days ago • 5 comments

Putting it out to the universe: someone should buy the rights to "Interactive Physics" and then distribute it for free to students and teachers. There is still nothing quite like it...and it is slowly disappearing 🙁 Here is a look at the bowling ball problem...#Iteachphysics

submitted 81 days ago • 1 comment

Another fun Desmos3D creation. This one shows a hyperbolic paraboloid. You can see the cross sections parallel to the coordinate planes and how they knit together to form the surface. www.desmos.com/3d/9hnbnkqutq #IteachMath #ShouldBeGradingPapers

submitted 85 days ago • 1 comment