William Bernhardt has been using learning materials developed by Caleb Gattegno in his teaching since 1971. These materials include color-coded charts for sounds, words, and vocabulary; wooden rods for illustrating structures; and wall pictures for triggering writing. Bernhardt finds the materials help elicit writing from learners of all ages and abilities. They provide opportunities for confidence, freedom from inhibition, and mastery of various writing conventions and the written code of English. The possibilities of the materials seem infinite to Bernhardt, and he continues to develop new applications through workshops and reading Gattegno's works.