A theory of intelligence developed in the 1980s by Howard Gardner, professor of education at Harvard University. Gardner defines intelligence broadly as "the capacity to solve problems or fashion products that are valued in one or more cultural setting." He originally identified seven intelligences: linguistic, logical-mathematical, musical, spatial, bodily-kinesthetic, interpersonal, and intrapersonal. He later suggested the existence of several others, including naturalist, spiritual, and existential. Everyone has all the intelligences, but in different proportions.
Teachers who use a multiple-intelligences approach strive to present subject matter in ways that allow students to use several intelligences. For example, they might teach about the Civil War using songs from that period or teach the solar system by having students physically act out the rotation of planets around the sun.
Source: Quote from "Multiple Intelligences Go to School: Educational Implications of the Theory of Multiple Intelligences," by H. Gardner & T. Hatch, 1989, Educational Researcher, 18(8), 4–9.