What helped me the most to learn math is the attempt to visualize concepts – and given powerful tools like GeoGebra, you can visualize a lot of things in maths. Here are some that I have found useful to understand concepts better.

Calculus of Variations
Independent Field, Started as a part of Mechanics
- Visualizing a simple functional
- Visualizing moving boundary problems.
- A few Geometric Shapes and Brachistochrone Problem – Visualizing Brachistochrone Problem.
Tool Used: GeoGebra

Real Analysis
Where we study properties of Real Numbers
- Continuity
- Metric Spaces (YouTube)
Tools used: Yer mind, GoeGebra.