Abstraction: Overview of the art style provided by the National Gallery of Art, Washington, DC.
En Plein Air: Essay by artist Terry Fenton provides a history and description of the painting technique.
Encaustic painting - Wikipedia: Brief encyclopedia article describes the painting medium.
Fresco: Brief definition and history for the paining technique.
Matisse for Kids: Meet Raoudi, artist Henri Matisse's perky schnauzer, in an on-line exploration of the 20th-century master's bold, bright paintings.
NGA Kids: Martin Johnson Heade: Educational look at the "senses" used in the creation of the painting "Cattleya Orchid and Three Brazilian Hummingbirds".
Paint by Number: Teaches a popular painting technique of the early 1950s.
Pastels: Brief definition and history for the art medium.
Roman Portraits from Fayuum: Brief essay about the early use of encaustic painting in Egypt for mummy portraits.
The Painting Guide: Student guide to painting techniques compiled by Debra Clem, fine arts professor, Indiana University Southeast.
Worldwide Art Gallery - Pigment: Learn about pigment, the part of the paint that is the color.