# Math Foundations
Visual, intuition-first math lessons.
## Core ideas
- Numbers, units, and scaling
- Fractions, ratios, and percentages
- Exponents, roots, and logs
- Coordinates and graphs
- Functions as input-output machines
## Public visual lessons
- [Visual Pi Dependencies](/articles/ec3ebdf4-f6cc-47bf-b597-56fc7b53d130)
- [Visual Degrees vs Radians](/articles/4bc70fd7-fa6e-4989-988f-834ff34babdf)
- [Visual Radians Without Math Libraries](/articles/7090a8d6-5f02-456e-82ec-31741bd1fe38)
- [Visual Angle Wrapping](/articles/0acc962a-66da-4990-8014-8fd781b9de25)
- [Visual Triangle Geometry](/articles/794e2e02-16a0-43fc-955a-ab27f8d1de8d)
## Next sections
- Geometry and Trigonometry
- Calculus
- Math Without Libraries