I would absolutely love to see more visualizations like this in e-textbooks. I think it would assist with the readers' understanding, particularly in secondary

I would absolutely love to see more visualizations like this in e-textbooks. I think it would assist with the readers' understanding, particularly in secondary school math or physics where students may have difficulty grasping new concepts in geometry, algebra, and the like. As a math tutor, having something to show my students really helps things. Well done!