The document discusses two-column note taking, which involves dividing a page into two columns - a main idea column on the left and an expanding column on the right. Major headings are written in the left column and elaborated on in the right column. The four basic steps of two-column note taking are outlined. Variations, such as rewriting headings as questions, are mentioned. Classes where two-column notes may be effective include social sciences, natural sciences, and English due to an emphasis on reading. In conclusion, two-column notes can positively influence student achievement, information retention, lecture note organization, and study time efficiency.