New York University
New York Univ.: Tandon School of Engineering: Static and Kinetic Friction [Ppt]
Explains what static and kinetic friction are and discusses the coefficient of friction for different situations. Presents two simple lab experiments and real-life examples of friction in action.
Educaplus (Jesús Peñas Cano)
Educaplus: Coeficientes De Rozamiento [In Spanish]
This is a virtual laboratory to determine the static and dynamic coefficients of friction.
Other
Science Hobbyist: Sticky Electrostatics
A series of activities focusing on charge interactions, charging methods, and the conservation of charge. Activities utilize scotch tape and other readily available items. Includes explanations of what is happening.