My Website covers Pre-Calc through Calc3 and elementary DEs

the site is Calculus Animations

The Calc3 Topics (notes and animations) include:

Graphs in 3D

Partial Derivatives

Directional Derivatives

Tangent Planes

Optimization

Double Integrals

Triple Integrals

Line Integrals

Flux Integrals

Surface Integrals

Vector Value Functions

Unit Tangents/Normals

Parametric Eqns in 3d--to include lines