# Videos: summary and additional material
The story of the derivation of the finite element method is told once more in this section with a series of videos.
## Derivation of the finite element formulation in 1D
Recap of the derivation of the finite element formulation for the 1D Poisson equation.
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## Elements and shape functions
Recap of the role of elements and shape functions in the finite element method.
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## 2D derivation and boundary conditions
Derivation of the finite element method for the 2D Poisson equation. In the Friday project you will work with a 2D finite element implementation.
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## Numerical integration
In the notebooks of this week, numerical integration is implemented in a rather direct way. This video presents a more general discussion of numerical integration for different elements.
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## Isoparametric mapping
To complete the story of how shape functions and numerical integration are usually implemented in notebooks, here is a video with additional material on isoparametric mapping.
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