Phil Keller
@pckeller.bsky.social
High school physics teacher, a little math too. And dogs.
March 17, 2025 at 3:59 PM
I made one like that. It takes patience and I found that I could not get the timing right every time. But it did work! If only Interactive Physics would distribute a free player version!
February 6, 2025 at 6:26 PM
I made one like that. It takes patience and I found that I could not get the timing right every time. But it did work! If only Interactive Physics would distribute a free player version!
Just got this to work: modeling pumping up amplitude on a swing, using Interactive Physics. #iteachphysics
February 6, 2025 at 5:30 PM
Just got this to work: modeling pumping up amplitude on a swing, using Interactive Physics. #iteachphysics
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
January 24, 2025 at 3:03 PM
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
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...
January 21, 2025 at 2:08 PM
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...
Not sure what to make of this…
December 23, 2024 at 9:06 PM
Not sure what to make of this…
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
December 20, 2024 at 1:56 PM
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
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?)
www.desmos.com/3d/25qiw4vzhg
#Iteachmath (If I keep working on these things, the papers will grade themselves, right?)
December 18, 2024 at 4:26 PM
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?)
www.desmos.com/3d/25qiw4vzhg
#Iteachmath (If I keep working on these things, the papers will grade themselves, right?)
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
December 10, 2024 at 7:03 PM
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
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
Here is a look at the bowling ball problem...#Iteachphysics
December 9, 2024 at 2:25 PM
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
Here is a look at the bowling ball problem...#Iteachphysics
So I archived my posts from that other place. I see that I have posted some silly things. Gonna try to keep doing that. Here is the senior member of our pack.
November 15, 2024 at 11:31 PM
So I archived my posts from that other place. I see that I have posted some silly things. Gonna try to keep doing that. Here is the senior member of our pack.
Desmos 3d! It's hard to imagine teaching (or learning) this stuff without this kind of help.
www.desmos.com/3d/4w2lsorlzz
www.desmos.com/3d/4w2lsorlzz
November 15, 2024 at 2:11 PM
Desmos 3d! It's hard to imagine teaching (or learning) this stuff without this kind of help.
www.desmos.com/3d/4w2lsorlzz
www.desmos.com/3d/4w2lsorlzz
I thought Duo Lingo was my ally. But just moments later, it was mocking me…
October 18, 2023 at 7:42 PM
I thought Duo Lingo was my ally. But just moments later, it was mocking me…