Here are some videos I made using ManimCE Python library.

[Derivative as the slope of the tangent line]


This is made for Math 1100 Business Calculus I've taught in Fall 2023: It describes the definition of the derivative of a function as the slope of the tangent line, approximated by the slopes of nearby secant lines.

[Exploring Word Maps: Mapping Classes of Infinite Graphs]

Word Map.mp4

The video describes the word map, an important mapping class of an infinite graph. For more details on word maps, check out papers (here and here) by George Domat, Hannah Hoganson and myself.