https://en.wikipedia.org/wiki/Algodoo

https://www.researchgate.net/publication/346398251

https://www.physicscurriculum.com/interactivephysics

https://www.youtube.com/user/Algoryx/playlists

http://www.algodoo.com/algobox/details.php?id=228745

My attention was recently called to Emil Ernerfeldt’s 2D physics modeling game Algodoo via Elias Euler’s recent PER dissertation “Learning Physics with Controllable Worlds….” I have been an avid fan and user of such software in the past (e.g., diSessa’s Boxer and White’s ThinkerTools microworld pubs) and was a huge user of Interactive Physics in the days when it was a cross-platform package, particularly admiring animated free-body diagrams and object velocity vectors during projectile motion, and the use of real-time running graphs of momentum, energy, etc. Algodoo is a freeware package for Mac and PC, or $5 on iOS, and an online community of artists, gamers, and teachers exists mostly making Rube Goldberg-style animated machines for fun. German physics and STEM teacher preparation courses use it, and my colleague Florian Genz writes:

“Algodoo allows learners to visualize force, momentum and velocity vectors in real-time while...

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