Nice video. I create similar diagrams with Geogebra, https://www.geogebra.org/ https://www.geogebra.org/. What I like about Geogebra is (1) it's free and (2) I

Nice video. I create similar diagrams with Geogebra, https://www.geogebra.org/ https://www.geogebra.org/. What I like about Geogebra is (1) it's free and (2) I can build interactive diagrams without having to do any computer coding. I encourage students in my Calculus and Statistics classes to use it to explore ideas for themselves.