Science Struck
Science Struck: Guide on Interpolation vs. Extrapolation
Explains what interpolation and extrapolation are and methods used for them in statistics. Gives real-world examples of their applications in telecommunications, engineering, thermodynamics etc.
Interactive Mathematics
Interactive Mathematics: Fast Fourier Transform
The Fast Fourier Transform is applied using examples of digital audio recording. Connections to frequency are made through prisms and the cochlea of the ear.